Answer:
The correct answer is indeed B. it describes what the narrator experiences in the story.
Step-by-step explanation:
For several days ensuing, her name was unmentioned by either Usher or myself: and during this period I was busied in earnest endeavours to alleviate the melancholy of my friend.
When we read the passage above, we get to know what the narrator was going through, what he was experiencing while keeping his friend company. The narrator does not infer or criticize anything in this excerpt. He also does not make any explanations about his past. He is simply letting us know a fact - that he tried his best to help his friend with his depression.
This excerpt was taken from the short story " "The Fall of the House of Usher", by Edgar Allan Poe.