The best response is:
The author’s description of Farquhar’s escape dream as though it were real allows the story’s ending to be a surprise.
This choice emphasizes the vividness and immediacy of Farquhar's imagined escape, leading the reader to believe in the reality of his experience just before the shocking revelation of his death. The blurring of the lines between reality and illusion heightens the impact of the final twist, making the ending more surprising and poignant.