Answer:
C. The writer wants to conceal the identity of the person who broke the jar
When Romeo says “he jests at scars that never felt a wound” he’s basically saying that it’s easy to make fun of or joke about others scars or hurts, especially if you have never experienced that type of hurt. Basically, he uses it to describe the apathy of Mercutio when he overhears him joking about Romeo’s short-lived love and devotion to Rosaline.
