In the following conversation, which discussion technique does jennifer most clearly show?

jennifer:
you said earlier that paper dolls are fragile, and so are people.

daniel:
kind of. more like cultures are fragile. they change, adapt, and get molded into something new.

jennifer:
but could that versatility be viewed as a strength?

daniel:
i don't think so. cultures are bendable, like paper, like the book said.
a. making an objective
b. returning to the text
c. asking rhetorical questions
d. challenging assumptions