Answer:
B. Ren doing other work while participating.
Step-by-step explanation:
This is most likely the complication that will arise throughout the discussion. The fact that the members have different perspectives is more likely to be positive. Lacking a leader is not necessarily a problem, and Ren losing interest does not seem probable. However, the fact that Ren has other projects to complete means he might not have time to participate as much as he would like.