Jackson uses common people for her characters. Could she have chosen characters from other levels of sophistication/class with the same effect?

An oxymoron is when 2 words that are next to each other in a sentence have contradictory meanings. An example of this would be "You are pretty ugly." The actual meaning of the sentence is that the person is ugly, but using pretty and ugly next to each other makes it an oxymoron.

You have not included the answer choices, so I cannot give you the exact answer. If you post them in the comments, I will help you to the best of my ability.