ACT English Quiz: Commas

The museum's new exhibit traces the history of street photography, from bulky early cameras to today's phone snapshots. As I walked through the rooms, I noticed how often the best images were unplanned. A child laughed, a commuter yawned, a dog tugged at its leash. In the final gallery I lingered over a photo that captured all three moments at once.

Which choice makes the sentence most grammatically acceptable?

In a science podcast, a host described how researchers track migrating birds at night. Some teams use radar, others use audio recorders that capture flight calls, and a few rely on tiny GPS tags. The host noted that each method has trade-offs: radar covers wide areas but can't identify individuals, while tags provide detail but require catching birds first. The episode ended with a reminder that good data comes from careful planning and clear questions. The host listed the tools as radar audio recorders and GPS tags.

Which choice makes the sentence most grammatically acceptable?

My cousin runs a small food truck that parks outside the stadium on game days. The menu is short, but everything is made to order: grilled corn, spicy tacos, and limeade. Before the first customers arrive, he checks the propane, wipes the counter, and, counts the cash box twice.

Which choice makes the sentence most grammatically acceptable?

At the farmers' market, one stand sells only apples, but the variety is impressive. There are tart green ones for pies, crisp red ones for snacks, and tiny yellow ones that taste like honey. The vendor, a former teacher explains each type with the patience of a classroom veteran.

Which choice makes the sentence most grammatically acceptable?

My uncle restores old bicycles, and his garage looks like a small museum of gears and frames. When I visited, he showed me a road bike from the 1970s with faded decals and a bell that still rang clearly. He explained that restoring a bike isn't just about replacing parts; it's also about preserving the feel of the ride. As he worked, he cleaned the chain, adjusted the brakes, and tested the wheels. He let me try tightening a bolt with his favorite tool, a small, adjustable wrench he'd owned for years.

Which choice makes the sentence most grammatically acceptable?

In an article about city planning, the author argued that sidewalks are more than decoration. They encourage walking, support local businesses, and make neighborhoods feel connected. The author also noted that trees along sidewalks provide shade, reduce heat, and, improve air quality.

Which choice makes the sentence most grammatically acceptable?

An informational article about public libraries argues that modern libraries are more than book lenders. Many now offer free workshops on résumé writing, language learning, and basic coding. The article profiles a branch that transformed an unused storage area into a small makerspace with tools for crafting and electronics. Patrons can reserve equipment, attend demonstrations, or collaborate on projects. The librarian explained that the goal is to provide resources that people need, and cannot easily access elsewhere.

Which choice makes the sentence most grammatically acceptable?

During my first week at the community garden, I expected quiet work and small talk. Instead, I learned that planning matters as much as planting. Our coordinator asked us to list what we needed before the next workday: gloves, trowels, and a watering can. Then she reminded us that the shed stays locked unless a volunteer signs it out, so we made a checklist and posted it by the gate.

Which choice makes the sentence most grammatically acceptable?

My aunt grows herbs on her windowsill in mismatched mugs and jars. When I visit, she snips basil for pasta, mint for tea, and rosemary for roasted vegetables. She insists that fresh herbs make cooking easier, not harder because they add flavor without extra steps.

Which choice makes the sentence most grammatically acceptable?

PASSAGE IV: The Accidental Toy

¹ Many of the world's most popular inventions were created by accident. In 1943, a naval engineer named Richard James (31) is trying to invent a set of tension springs that could keep sensitive ship equipment steady at sea. During a test in his laboratory, he accidentally knocked one of the coiled springs off a shelf. Instead of simply crashing to the floor, the steel spring "stepped" in a series of arcs from a stack of books, to a tabletop, and finally down to the ground, where it neatly coiled itself back up.

² James was mesmerized by the fluid, walking motion of the metal. He immediately realized the spring had potential as a novelty item. (32) After calculating the exact amount of tension required to make the spring walk smoothly, he spent the next year perfecting the formula. His wife, (33) Betty named the toy the "Slinky" after finding the word in a dictionary; she felt the word perfectly described the graceful, sinuous movement of the spring.

³ In 1945, Richard and Betty James manufactured the first batch of four hundred Slinkys. They convinced the manager of Gimbels Department Store (34) in Philadelphia, Pennsylvania, to allow them to set up a display during the Christmas shopping season. (35) Initially, the toys sat unsold for days. However, once Richard set up an inclined board and demonstrated how the metal spring could walk down the ramp on its own, a crowd quickly gathered. Within ninety minutes, all four hundred Slinkys had been sold.

⁴ The Slinky became a massive success, but its simple design presented a unique manufacturing challenge. To keep the cost low, the factory had to cut and coil the steel wire with absolute precision. (36) Because each of the springs needed to have exactly ninety-eight coils. If the tension was even slightly off, the Slinky would not walk.

⁵ Despite these challenges, the James family eventually expanded their production to include plastic versions of the toy. The plastic models could be dyed in bright, vibrant colors, making them even more appealing to young children. (37) Meanwhile, the Slinky remains one of the best-selling toys in American history. Over 300 million units have been sold worldwide. The incredible popularity of this simple coil of wire proves that (38) a toy that is fun and enjoyable to play with doesn't need batteries or microchips to capture the imagination. (39)

Which of the following choices makes the sentence most grammatically acceptable?

My grandfather taught me to fix a flat tire in the driveway behind his garage. First, he said, loosen the lug nuts while the car is still on the ground. Next, jack up the car and remove the wheel. Finally put on the spare, tighten the nuts in a star pattern, and lower the car carefully.

Which choice makes the sentence most grammatically acceptable?

Her favorite hobbies are painting, reading and hiking.

For a class project, I interviewed my grandmother about the first job she held after high school. She worked at a small radio station, filing records and answering phones, but she also learned to cue music for live broadcasts. When a DJ called in sick, she sometimes filled in, reading weather updates and introducing songs. She said the job taught her to speak clearly even when she felt nervous. Her favorite part was the studio itself, with its bright, blue walls and heavy soundproof door.

Which choice makes the sentence most grammatically acceptable?

At the start of the semester, our teacher asked everyone to keep a reading journal. Some entries were simple summaries, but over time I began to write questions in the margins and trace themes across chapters. I noticed that when I paused to reflect, I remembered details more clearly during discussions. The journal became less like homework and more like a conversation with the text. To stay consistent I set aside ten minutes each night for writing.

Which choice makes the sentence most grammatically acceptable?

The historical museum, which we visited last summer, had an extensive exhibit on the civil war including uniforms, weapons and personal letters from soldiers.

My neighborhood association publishes a monthly newsletter about local issues. One article outlined a plan to reduce traffic near the elementary school by adjusting crosswalk timing and adding bike racks. Another article profiled a retired firefighter who now teaches first-aid workshops. The editor invited residents to submit ideas for future topics. The newsletter is useful, it also feels like a record of who we are.

Which choice makes the sentence most grammatically acceptable?

After moving to a smaller apartment, I tried to keep only what I used. I donated old textbooks, recycled stacks of paper, and gave my neighbor a lamp. Still, one box stayed on the closet shelf: letters from my grandmother, written in looping cursive. I read them slowly, and I realized they were less like keepsakes and more like instructions for living, patiently, and with humor.

Which choice makes the sentence most grammatically acceptable?

"The Comet Hunter\n\n¹ Born in Hanover in 1750, Caroline Herschel was not destined for scientific fame. Her mother viewed education as unnecessary for a girl, insisting that Caroline train only in household chores. In 1772, however, [10] Caroline's brother William rescued her from this limited life, bringing her to Bath, England, to join him. William was a musician with a growing passion for astronomy, and it wasn't long before Caroline begun [11] to share his enthusiasm.\n\n² Caroline served as William's assistant, a role that required both physical stamina and intellectual precision. She ground and polished the metal mirrors for their telescopes, a task that often left her hands raw. William observed the heavens at the eyepiece, she sat [12] by a window, recording his data and double-checking his calculations. She worked diligently, [13] ensuring that every coordinate was accurate. It was during these long nights that she learned the geography of the night sky.\n\n³ Encouraged by William, Caroline began using a small Newtonian sweeper telescope to conduct her own observations. On August 1, 1786, she spotted a slow-moving object that wasn't on any star chart. It was a comet; the first [14] of eight she would discover over the next decade. Her success brought her international renown. In 1787, King George III granted her an annual salary of £50. This salary made [15] her the first woman in history to receive official payment for scientific work.\n\n⁴ Caroline's contributions extended beyond her comet discoveries. She compiled a massive catalogue of stars and nebulae, updating the work of the astronomer John Flamsteed. [16] This catalogue remained a standard reference for nearly half a century. If Caroline were [17] to see the advanced instruments used by astronomers today, she would marvel at their power, yet her meticulous methods would still be relevant. Caroline Herschel's life proved that curiosity and perseverance could break through the social barriers of the eighteenth century. [18]"

Which of the following choices makes the sentence most grammatically acceptable?

A short biography of the inventor Lewis Latimer notes that he drafted patents and improved electric lighting. In class, we focused on how his technical drawings helped other engineers reproduce complex designs. Latimer's work mattered because it combined precision with imagination and, because it made new technology easier to share.

Which choice makes the sentence most grammatically acceptable?

During my first week volunteering at the animal shelter, I learned that the quietest jobs often matter most. I spent an hour refilling water bowls, folding towels, and wiping down kennels. The routine was simple, but it kept the dogs calm. By the end of the shift, my supervisor thanked me for being thorough, and I realized I liked work that left a place better than I found it. She reminded me to move slowly when the puppies were nervous, and to speak softly.

Which choice makes the sentence most grammatically acceptable?