In my opinion, the correct answer is A. unhealthy family relations. Even though the Usher siblings might be mentally ill, we don't see that from this excerpt, just like there are no hints at supernatural beings or weak women characters. We just see the eerie bonds that have connected all members of the family, along with the house as a "creature" of its own.
Answer:
A
Explanation:
because it would fit her "compassionate personality" which is a character trait