On the other hand is the transition phrase that introduces a comparison
Answer:
An unnamed narrator approaches the house of Usher on a “dull, dark, and soundless day.” This house—the estate of his boyhood friend, Roderick Usher—is gloomy and mysterious. The narrator observes that the house seems to have absorbed an evil and diseased atmosphere from the decaying trees and murky ponds around it.
The correct answer is A i think