These changes reflect the fact that the parents of these two children are divorced and are undergoing adjustments on the custody of their children. This is often the most complicated part of filing for a divorce, because children are uprooted from their family backgrounds and are forced to live in a different situation from which they were accustomed to.
The correct answer is option A. It is true that communication between members of a primary group is emotional, personal and satisfying. People belong to primary groups such as a family or having close friends, to satisfy their personal needs of belonging and fulfillment. The members of a primary group are close, take care of each other and share activities.