The sister here could be said to “pester” her brother, that is, to attempt to annoy him into anger. When someone “provokes” another person, he or she attempts to draw out or cause an emotion or reaction in that person. The word comes from roots that literally mean to draw forth. The “pro-” prefix can mean forward, as can be seen in words like “proceed” (to go forward with some chosen action). The “-voke” portion here means to call. It is found in words like “invoke” and “invocation.” It is also related to words like “vocal” and “vocation.”

Since the sentence specifically mentions that Robert is dehydrated, it is best to choose the answer that best describes the removal of said condition. When one “slakes” his or her thirst, he or she quenches it or satisfies it. Although the word is distantly related to the notion of “slackening” (as in loosening), it is most often used to describe the act of quenching or reducing thirst.

We can infer that the sentence's subject walks around both aimlessly (because he does not "[walk] immediately to a destination") and clumsily (because he "often trip[s] over his own shoelaces or run[s] into stationary objects on the way"). So, we need to pick out a verb for the blank that means something like "walk aimlessly and clumsily." "Bumbling," a verb that can mean moving or speaking in a clumsy way, is the best answer because it best fits the context of the sentence.

The key phrase in this sentence is “eliminating extraneous concerns.” When someone “cuts out” extra content, he or she helps to show the exact boundaries of a problem or question. The word “delimit” means to set the limits or boundaries of. Here, such delimitation is being done by selecting the specific questions to be asked, thus setting the appropriate limits for research into the problem.

From the context of the sentence, we can tell that letting the cat into the room with the angry dogs worsened the situation, so we need to choose a verb that means something like worsen. "Exacerbated" means just that, so it is the correct answer.

We know that Connie was able to figure out how the magician's tricks worked without him explaining them to her, so we're looking for a verb that is a synonym for "deduce." Because "infer" means deduce something without it being explicitly stated, it is the correct answer.

Since the criminal got his sentence reduced "from a year to six months in jail," we know that we're looking for a verb that means something like reduce. Because of this, "mitigate," which means lessen the severity of, is the best answer choice. (While "belittle" sounds like a likely answer, it doesn't actually mean to make smaller. Instead, it means cause someone to feel or appear unimportant or cause something to appear unimportant.)

Since Thomas cannot totally remove the injustice, he at least wishes to improve the situation and make it less burdensome for some people at least. When one “alleviates” something, he or she makes it less “heavy” or less severe. Often, we think of “alleviating suffering,” though the term can be used much more generally. The term literally means “[moving] toward a lighter state.” The “-lev-” portion comes from Latin roots meaning light (in weight) and can be found in English words like “levity” and “levitate.”

The key thing to note in this opposition is that Gina “lags” in mathematics and science, meaning that she “falls behind” the others. Therefore, the word that we need must capture the sense of “going or passing ahead of” the others (in music). The word “surpass” literally means to pass over. The prefix “sur-” means over or on top of, as is found in the English “surface,” which literally means the top face.

The key expression in this sentence is “did not suppress it completely.” Since the engine did not lose its operational capacity entirely, the best option will be one that expresses a “partial loss.” When something is “impaired,” it is made to be in a diminished state (though not totally extinguished).