Which technique is Ramy most clearly using in the following discussion?

C. Challenging a assumption
That is because Charlotte assumed that Lin is weak, and Ramy challenges the assumption by saying that he might not be weak.
Answer:
C. Challenging an assumption
Explanation:
Ramy is using the challenging an assumption technique because he first starts recollecting information about Charlotte's point of view about an event, once Charlotte responds, he aims to subtlety challenge this opinion or assumption by asking a question that helps the listener change their pattern of thinking and have a new perspective on the issue.