Why does Montresor warn Fortunato about the air in the vaults?

Question

a. Montresor wants to make sure that Fortunato does not suspect his motives.
b. Montresor wants to discourage Fortunato from entering the vaults.
c. Montresor wants to avoid responsibility for Fortunato’s death.
d. Montresor wants to warn Fortunato that death is near.

Answer 1

b. Montresor wants to discourage Fortunato from entering the vaults.