This question seems to be incomplete. However, there is enough information to find the right answer.
Answer: d. pun
Explanation:
In "Romeo and Juliet," by William Shakespeare, when Romeo asks about his wound, Mercutio uses a pun when he claims that he will soon be found a “grave man.” He uses the word "grave" as an adjective that characterizes his mood the next day as serious because he won't be laughing anymore due to his wound. But the same word also means ’s the place where the coffin of a dead body is placed, meaning that Mercutio knows that he´s going to die.
