We are told that Sarah is "determined to win [her parents] over" and convince them to let her go on the field trip, and that she "kept bringing the topic up at every opportunity," so the answer choice that best fits the blank is "resolute," which means determined, unfaltering, or persistent. As for the other answer choices, none are justified by the sentence's context clues as the best choice for the blank: "sincere" means genuine; "gallant" means proper and heroic; "ruthless" means merciless; and "superficial" means having to do with surface appearances or only concerned with surface appearances.

Since the state park map used "unlabeled symbols" and displayed "paths that were easy to mix up with one another," we can infer that we need to pick out an adjective for the blank that means something like "confusing." The best answer choice is thus "baffling," which means confusing or bewildering. None of the other answer choices make sense in the blank: "tedious" means boring due to repetition; "concise" means short and is used to refer to written works; effortless means done without effort or done in such an impressive way as to make it appear as no effort was needed; and "deceiving" means conveying information that is false as if it were true.

Since Jessica needs another metric for differentiating between the two colleges, this indicates their financial aid packages were about the same, or "comparable," a word that means able to be compared or similar. None of the other answer choices are justified by the sentence's context clues:  "invariable" means never changing; "miscellaneous" means varied; "precise" means accurate; and "prearranged" means arranged prior to an event.

Since the child's happiness spread, it means that it was "contagious." "Contagious" means spreading easily from person to person and is usually used to describe diseases, but can also be used to describe other things. As for the other answer choices, "unwavering" means resolute or having no variation, "genuine" means truthful, "faithful" means loyal, and "surreptitious" means secretive or covert.

The blank should be filled in with a word that means the opposite of "active." "Passive" means the opposite of active because they are antonyms. "Active" means engaged or participating in something, while "passive" means unengaged or merely observing something instead of participating in it. "Inert" means not in motion. Given the context of the sentence, which describes learning techniques, that answer choice is not correct."Ineffective" is an opposite of "effective," but not the opposite of "active," so that is not the right answer choice. Plus, if learning techniques were known to be ineffective, studies wouldn't be needed to prove that they are ineffective. "Boring" is also not an opposite of "active."

The sentence tells you that the girl’s behavior was “abhorrent,” which means disgusting or horrible. Additionally, you are told that her parents tried to “correct” her behavior. These two pieces of evidence should lead you to choose an answer choice that means something like badly-behaved; therefore, the correct answer is “unruly.” “Unruly” means disobedient, not listening to rules. To provide further help, “benign” means harmless; “domineering” means in-charge; “loquacious” means talkative; “bashful” means shy or nervous. 

Since the author of the sentence cannot stop eating the strawberries, they must be tasty and delicious. This is closest in meaning to “delectable.” To provide further help, “pulchritudinous” means beautiful; “oblivious” means unaware; “curmudgeonly” describes someone who is easily annoyed, or someone who is stubborn; “grotesque” means horrific or repulsive. 

We know that the sheep are "gentle" and that they stayed where the shepherdess put them, so we need to pick out an answer choice that describes these qualities. While "intractable" might look like a potentially correct answer, "intractable" actually means difficult to control, the opposite of "gentle" and obedient, so it can't be the correct answer. "Meek," however, means submissive and gentle, and because it best fits the context of the sentence, "meek" is the correct answer.

We can infer that the lab in the back of the altered RV can move around, as the doctors can take it directly to outbreak sites. So, we need to pick out an answer choice that reflects the lab's ability to be easily transported. "Malingering" may look like a potentially correct answer because it has to do with disease, meaning pretending that one is sick in order to avoid having to do something, e.g. go to work, it does not have anything to do with something being easily transportable, so it cannot be the correct answer. "Mobile," however, when used as an adjective, means able to be moved to different locations. Because "mobile" best fits the context of the sentence, "mobile" is the correct answer.

We can tell from the sentence's context that Daisy has an advanced understanding of computers, because she was able to perform "a complex procedure only professional technicians would be able to execute without error." So, we need to pick out a word that means something like advanced. "Amateur" is an antonym of "advanced," so it cannot be the correct answer. "Sorry" could mean pitiful, but even then, it would be a near antonym of "advanced," so it could not be the correct answer either. "Keen" is the best answer choice; in this context, it means acute or developed, so it is the closest synonym to "advanced" amongst the listed answer choices.