Characters is not a kind of point of view
The narrator observes that the house seems to have absorbed an evil and diseased atmosphere from the decaying trees and murky ponds around it.
A play that ends with death is traditionally considered a tragedy.
A tragedy is a type of a play which ends on a sad note - usually, one (or sometimes many, even all characters) die, and usually in a very tragic way. Take Hamlet for example - almost everyone dies there: Hamlet, Gertrude, Claudius, Ophelia - almost every important characters is gone by the end of the play.
Answer:
Probably by setting the mood in the poem
Explanation:
B. When making an inference, you must look at non-explicit information.