(HURRY) Which rule-setting strategy in a group discussion would best solve this problem?

Casey has a list of ideas he is excited to share when the group meets. He starts explaining then on by on to see what people think. After 20 minutes, he still has thee more ideas to go, and no one else has shared anything.

A. Ask an expert
B. Find common ground.
C. Set a time.
D. Change the subject.

HELPPPP