The correct answer should be (qtd. in Brown 32).
This is called citing indirect sources which means that you're citing a source from another source. In this case, you are citing Hemingway as a source from Thomas Brown's novel as a source.
Wait what is the question
The correct answer should be<span> Evil can never truly hide itself.
Hyde is finally revealed as to who he is and what is he doing there. The last two possible answers are not themes but rather plot elements, while the second is not found in this paragraph.</span>