“Popular” means liked or appealing to a lot of people, or “well-liked.” As for the other answer choices, “uncovered” means shown or not covered or hidden; “incoherent” means not able to be understood; "false" means not true or inauthentic; and "chatty" means liking to talk at length about relatively unimportant subjects.

"Liberty” means "freedom." “Slavery” is the opposite of “freedom” and “liberty”; it is a system where men own other men. The “economy” is the collective name for the producing, buying, and selling of everything; “finance” is to do with banking and handling of money; and “technology” refers to machines created by people to do something.

To be “certain” means to be sure of one's decision or opinion, so "sure" is the correct answer. The prefix "un-" means not, so “unsure” means not sure and “uncomfortable” means not comfortable. “Bemused” means confused, and "international” means between nations or global.

The prefix "co-" means together, so it makes sense that a "collision" is an instance of two physical things coming together forcefully, or a "crash." As for the other answer choices, “hint” means clue that helps someone solve a problem or riddle, often given by someone who already knows the answer; "grasp," when used as a noun, means grip or hold on something or someone; "assistance" means help; and "change," when used as a noun, means alteration.

The prefix "dis-" means not or away, or it makes a word mean its opposite. It thus makes sense that "disappear" means the opposite of "appear"—that is, "disappear" means "vanish." As for the other answer choices, "resume" means continue; “mistake,” when used as a verb, means confuse something or someone with something or someone else; “allude” means hint at; and "convey" means impart or transport.

The prefix "hyper-" means too much, so it makes sense that “hyperactive” means too active, making "overactive" the correct answer, as "over-" also means too much, meaning that "overactive" also means too active. As for the other answer choices, "distraught” means very upset; “pessimistic” means despondent and thinking bad things will happen; “optimistic” means hopeful and thinking good things will happen; and “absolved” means forgiven and no longer blamed for something.

"Pant" is a verb that means take in short, quick breaths as a result of a period of physical exertion. Dogs are often said to "pant." While "puff," "breathe," "inhale," and "blow" may each look like potentially correct answers because each has to do with the taking in and releasing of air in the lungs, "puff" (breathe in a series of quick gasps) is much closer in meaning to "pant" than "breathe" (inhale and exhale), "inhale" (take air into the lungs), or "blow" (exhale a concentrated gust of air, typically with the intention to move something with the stream of air produced, or bluster and gust, creating wind). While "clothe" may look like a good answer, "pant" is actually a verb, so while "pants" are a type of "clothes," "pant" and "clothe" (provide clothing for) don't mean the same thing.

The prefix "ab-" means away, so it makes sense that "abnormal" means away from normal, or in other words, not normal or "weird." As for the other answer choices, "edible" means able to be eaten; “solitary” means alone; “dedicated” means devoted to a job, a role, or a cause; and "delicate" means fragile and dainty.

While "a-" can mean not, as in words like "apolitical" (not participating in politics) and "ahistorical" (not historical), in other words, like "aquiver" (quivering) and "atremble" (trembling), and "asleep" (sleeping) it means in a state of. In the word "afire," this latter type of "a-" is used, so "afire" means on fire or "burning." If you thought that the "a-" prefix meant not, you may have picked "freezing," which means very cold. As for the other answer choices, "sprinting" means running very quickly; "loving" means affectionate and emotionally warm; and "hateful" means detestable.

The "il-" part of "illegal" is a form of the prefix "in-," which means not, so it makes sense that "illegal" means not legal or "unlawful." As for the other answer choices, "medical” refers to the science of health and the treatment of sick patients; “judicial” means fair, related to law, or making logical decisions based on fairness and reason; "egregious" means appalling and very bad; and "secretive" means not casually sharing information and instead keeping to oneself.