It suggests that is is a very inspirational piece.
Wallace places emphasis on the word "adjust" because he is addressing our realities and way of thinking as "default." He expresses the importance of paying attention to your surroundings, and adjusting to other perspectives and ways of thinking. He compares our ignored experiences to the water fish swim in but were never taught to notice.
Neither, a metaphor would be like "I'm so hungry that I could probably eat an elephant," while a simile would have 'like' or 'as' to describe something.
It must be C because if Pony told Randy that he had the knife and killed someone, that could lead to serious consequences that lead to the climax.
what's the topics!? hahhahahahah