The best response to the question 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 option captures how the author crafts the narrative to immerse readers in Farquhar's psychological state, leading them to believe in his escape only to reveal the shocking reality of his death at the end. The dream-like quality of the escape adds to the surprise, contrasting sharply with the grim conclusion.