The sentence describes what "unkind classmates" did to a girl with "unusual features." The correct answer will indicate both the meanness of her classmates, and the way the subject was singled out. "Taunting," meaning teasing or mocking, is the best choice among the answers.

The sentence contrasts the "small amount of angry letters" to the missing word. The correct answer, therefore, needs to indicate a large amount or at the least not small. "Barrage," meaning a deluge or extended gunfire, and used somewhat metaphorically, is the best choice among the answers.

The sentence contrasts the missing word with the man's "once harmless obsession." The correct answer needs to mean something problematic mentally, but much stronger. "Psychosis," meaning a severe mental disturbance, is the best choice among the answers.

The key words in the sentence are "rebellious and politically-charged clothing." This means the correct answer has to show the teenager is hoping to look like he is being difficult or politically different. "Dissident,"meaning someone who is a noncomformist or rebel, is the best choice among the answers.

The sentence explains that the soil has "little diversity." This means the correct answer has to indicate a sameness or uniformity, which is the definition of "homogeneity."

The sentence both calls the young man a "diehard fan," and notes all the things that indicate this. The correct answer needs to enhance this sense of the man's fanhood. "Personification," meaning the perfect embodiment of an idea or concept, is the best choice among the answers.

The storyteller keeps adding "non factual details to the narrative." This indicates she is decreasing the story's believability or acceptability, the definition of "plausibility," which is the correct answer.

The sentence actually describes the missing word as meaning the boxer "never got punched out or beat down." This means the correct answer has to indicate toughness or strength. "Resilience," meaning perseverance or an ability to come back, is the best choice among the answers.

The sentence describes a plan "perfectly figured out," which nonetheless was "doomed to failure." This indicates the correct answer will mean something that harms even perfect planning. "Vagary," meaning an unaccountable problem or freak mistake, is the best choice among the answers.

The sentence notes that the subject "never paid attention" to others' interests. This habit is the best clue to finding the missing word, as the correct answer must parallel this phrase in meaning. "Discountenance," meaning to show disapproval of, is the best choice among the answers.