First person, but it is possible to be second person, although second person books are EXTREMELY rare.
I think it’s c Chesterton a struggle to leave miss armitage
Answer: B) He wants to communicate directly with the readers.
Explanation: From the given options, the sentence that best explains why Walt Whitman uses such a simple phrase as "who I am or what I mean" in the given quotation from "Song of Myself" is the corresponding to option B: He wants to communicate directly with the readers, that is why he uses a simple phrase and also he addresses the reader in a direct way by using the pronoun "you."