Most likely metaphor..... but I could be wrong
Answer:
.... thesis statement ....
Explanation:
It’s The Who of the story because literary nonfiction reads like fiction and has story elements, like character, setting and plot. Some examples of literary nonfiction include personal journals, diaries, memoirs, letters, and essays.
The decision you would most likely make on your own is D) the music you listen to when you study.
All the other options are influenced by somebody else's opinion, whereas in D) you make the choice on your own.