Answer:
D) Others will be surprised to know the narrator has an enemy.
Step-by-step explanation:
According to the quote from the passage of "The Cask of Amontillado", the speaker believes that the people know the nature of his soul so well that it would come as a surprise for them to find out that he has an enemy.
Inference is he conclusion that is reached about a particular thing, based on the information available at the time.