It fails to support its claim with specific, credible evidence and uses a disrespectful tone
Answer:
It means to do and keep in secret so it would be (B)Go behind someone's back
Explanation:
A. The narrator will be more open to working with new people.
Usher's madness begins to increase because even though he knows his sister is dead, he can hear the sounds of knocking and scratching coming from her coffin. She is dead, but came back to life to haunt him, and thus his madness grows stronger due to his fear of her and death.
