The English prefix "uni-" comes from Latin and means having to do with one of something. Given this, it makes sense that “unique” means one-of-a-kind or "original." “Unoriginal” means not original, because the prefix "un-" means not. “Mandatory” means necessary as opposed to optional; “prohibited” means not allowed due to some official rule; and "limited" means having a defined and set extent.

"Terra" is the Latin word for earth or land, so it makes sense that “terrain” means a type of land, like “rocky terrain” or “grassy terrain.” The “temperature” is how hot or cold it is; “weather” means the temporary and changeable atmospheric conditions involving precipitation, wind, and temperature.

The root "nov" comes from Latin and means new or begin, so it makes sense that "novelty" means "newness." "Age" means the span of time for which someone or something has existed; "size" refers to the amount of physical space something or someone takes up; "entertainment" is something intended to amuse; and "fortune" can either refer to a large amount of money owned by one person or luck.

The root "ped" comes from Latin and means related to feet or walking; you can see it used in words like "pedal" and "impediment" and it is similar to the "pod-" one sees in the word "podiatrist," or doctor who specializes in treating patients' feet. Given this, it makes sense that a "pedestrian" is someone who is walking, usually by the side of a road. A “responder” is someone who answers something, such as a call; a “transporter” is someone who moves something from one place to another; and a “pilot” is someone who flies a plane.

The root "per" can throughout and is seen in words like "perfuse" (spread gradually throughout an entire thing), so it makes sense that "persist" means continue throughout a long period of time or in other words, keep going. "Continue" is thus the best answer. “Desist” means stop, or hold back from; “conclude” means finish; “delay” means cause to be set to commence until some point of time in the future; and “resist” means to not let something happen or to fight back.

The root "note" comes from Latin and usually relates to being important, as in words like "noteworthy" and phrases like "of note," both of which mean important. Thus, it makes sense that "notable" also means "important." “Insignificant” means not important; “responsible” means able to be trusted to do the right thing or mature; “edible” means able to be eaten; “audible” means able to be heard.

The Latin root "-pel" means force or drive and is found in English words like "dispel" (drive away or eliminate a bad feeling, especially uncertainty) and "repel" (to physically force back and away—think of what "mosquito repellant" accomplishes). Given this, it makes sense that "compel" means force someone to do something. “Deride” means mock, “imitate” means copy; “suppress” means subdue or curb; and "encourage" means support someone's actions and in doing so, suggest that he or she begin or continue those actions.

The root "ben" means good, so it makes sense that "benign" means not harmful, not dangerous, or "harmless." As for the other answer choices, “harmful” means causing damage; “helpless” means unable to help oneself; “helpful” means kind and providing assistance; and “horrific” means shocking and terrible.

The "chron-" part of "chronological" comes from a Latin word meaning time, so it makes sense that “chronological” means arranged in the order in which events happened. This is very close to the meaning of the word “sequential,” which means happening in a defined sequence. As for the other answer choices, “irreversible” means not able to be changed back or reversed; “malleable” means flexible, bendable, and able to be molded; "timely" means well-timed or appropriate; and “inherent” means natural or inborn.

"Liber-" derives from Latin roots meaning free, so it makes sense that with the "-ate" suffix added, which means to do or make, "liberate" means set free from some kind of oppression. This means that "free" is the correct answer. As for the other answer choices, “enslave” means to make into a slave; “entrap” means capture; “rejoice” means celebrate or express happiness about something that happened; and “barter” means to trade one thing for another so as to conduct business without money.