The best way to make sure that a collaborative discussion stays on track and everyone is listening to each other is to:
A. discuss only topics on which everyone agrees.
B. insist that your ideas are correct.
C. summarize points of agreement and disagreement.
D. repeat an opinion until everyone agrees.

c

Explanation:

you want to keep everyone on track, so you can all talk about your agreements and disagreements, so everyone feels ‘included’ in the conversation. I mean I guess a would be correct, but that is not the right way to get an answer.

if you wanna put a, be my guest, but I believe it is c. sorry if this is wrong, just trying to help! :)

answer; i believe the correct answer is (117);