The correct answer is option C. "Making sure you're heard".
Explanation:
One of the bad habits that members of a debate could have is to not listen what the other members are saying because they are focused on his own points of view. The discussion technique "making sure you're heard" tries to avoid that this happens by repeating or paraphrasing one of the claims that other person proposed in the debate. In this example this technique was used as could be noticed by the use of the phrase "So you're saying that...", which implies that the speaker is repeating something that someone else said before.
