B. Make sure everyone participates.
The very nature of a group meeting is to gather group members to discuss a topic or decide on a course of action, and this discussion or decision will be based upon the views and opinions of all those present who were assigned or asked to be a part of the group meeting. Because group meetings tend to be small and are formed so that each member will have a better chance of contributing, one of the most effective rules for a group meeting would be that everyone participates.