Answer:
Fortunato's dress foreshadows his being a fool or buffoon.
Step-by-step explanation:
In the short story "The Cask of Amontillado", Edgar Allen Poe tells us about Montresor and his desire to avenge a thousand insults that his friend Fortunato had inflicted him with. The story deals with themes of deception, flattery, appearance and reality, revenge, etc.
In the given excerpt from the story, the narrator Montresor describes the clothing worn by Fortunato that carnival night. He states "[Fortunato] wore motley . . . had on a tight-fitting parti-striped dress, and his head was surmounted by the conical cap and bells." The motley is a multi-colored suit worn by clowns, which is a reference to the character of Fortunato. This dress foreshadows Fortunato to be a fool or buffoon.
Thus, the correct answer is the first option.