How does the dialogue in paragraphs 78-94 develop the plot of the story?

RL.8.3
A.
It reveals that Mr. White's wish has been granted but not in the way they expected.
B.
It shows that the visitor is uncomfortable with what he has to say, even though he is bringing a gift.
C.
It suggests that Mrs. White is concerned about her husband and takes steps to help him deal with the news he's received.
D.
It shows the sergeant-major reappearing in the story and causing more problems within the family.

The correct answer is A. It reveals that Mr. White's wish has been granted but not in the way they expected. The dialogue in paragraphs 78-94 shows that the visitors bring news about Herbert's death, which was a consequence of Mr. White's wish. This development in the plot shows that the wish granted by the monkey's paw has had a negative and unexpected outcome.