Answer:
This must happen in order for group control to be maintained.
Step-by-step explanation:
It is necessary that at least two people within a group know the number of members in that group to make sure that control of the group is maintained. In this way, these two people can manage the activities of the group based on their number of members, in addition to determining whether the group needs to be increased or decreased in order to reach their goals and complete their activities.