Answer:
D. They hint at Montresor’s motive for luring Fortunato into the catacombs.
Step-by-step explanation:
These lines of dialogue are essential to the development of the story. We know that Montresor wants to take revenge on Fortunato, and we know that this is the reason why they are both at the catacombs. However, we do not know what it is that prompted this desire for revenge. By explaining how his family's motto is "nobody provokes me without punishment," we learn that Montresor's motive is most likely to punish Fortunato for provoking him.