What is the main reason a speaker may use exclusive language

In what way is the narrator most clearly a monster? a. he has no reason to be bitter but he is. b. he doesn't need to hurt animals but he does. c. he ha no reason to be mean but he is. d. he doesn't need to feel ashamed but he does.

Whats does walter decision to move to the house create for the audience?

Does anyone know the answer to the question?