Suppose someone in a peer review group says this about a story's main character:

"He reminds me of my favorite cousin because he's always saying things that make other people laugh."

Which of these responses builds on the comment in a way that would help the writer?
I don't have a cousin like that. All of my cousins are much older than me, and boring.
He is a very likable character, especially when he takes time to cheer up his little sister.
Making other people laugh is not something that makes a character likable.
What does your cousin have to do with this story about two kids in Mexico?