Answer:
The correct answer is:
A serene sense of their own identity
Step-by-step explanation:
Roger Ebert calls "The Graduate" "the funniest American comedy of the year" and describes its humor as being rooted in A serene sense of their own identity as opposed to mindless sight gags and punch lines, and cites this as the main reason for its success.
Roger Ebert explains how the movie remains in time due to its original and particular focus. He even talks about the way in which he say the main character as a heroic rebel who could make an entire generation feel identified.