Answer: D) Setting.
Explanation: The setting of a story or a text is the place and time where the story takes place, it can also be the context of the story (political, historical, cultural, etc). In the given excerpt from "The Cask of Amontillado" we can see the description of a place, specifically a crypt. We can see detailed descriptions like "Its walls had been lined with human remains" and "Three sides of this interior crypt were still ornamented in this manner."