I think the answer is C, irony, because the quote is definitely not imagery nor anecdote, and it is not making reference to a famous literary work, idea, nor person, eliminating the choice of allusion as well.
A single sentence that summarize the whole chapter 27 of the absolute true diary of a part time Indian
D the more you under stand the more your writing skills, test skills and vocabulary will improve
You have to consider yoir audience in order to decide wht type of writing you're going to do, possibly what arguments to make, and what style you write your piece in. who you are writing for really makes your writing what it is.
I'm going to guess alliteration, sorry if i'm wrong