The number of people in an open group is generally what compared to a closed group?

• A. more stable than in a closed group.
• B. much smaller after an extended period of time than in a closed group.
• C. significantly larger than in a closed group.
• D. more dependent on the group leader's marketing skills than in a closed group.

Answer: (D)

In an open group, membership is fluid, so the number of participants at any moment fluctuates as people join and leave. Because new members can come in at any time, how large the group is often hinges on outreach and recruitment efforts—the facilitator’s ability to market the group, attract participants, and keep seats filled. Closed groups, on the other hand, set a fixed size from the start and don’t regularly welcome new members, so their numbers are driven more by the initial recruitment and retention within that fixed cohort rather than ongoing marketing. That’s why the statement about the group leader’s marketing skills being a key factor for open groups makes the most sense.