The answer would have to be option B "Elenita struggles to keep her identities separate." This option seems to be the best fit. It's not option A because she said she DOESN'T want to invite any of her friends over. It's not option C because I dont see anything in this excerpt that has to deal with her father not wanting to return to Puerto Rico. It's also not option D because she's just saying that her friends would die of culture shock if they see her house therefore she's not loosing any faith. So, the answer would have to be option B.
Good luck.