Final answer:
Group members establish the group's norms, which will guide their behaviors.
Step-by-step explanation:
In the context of group communication, when group members first begin to communicate, they start to establish the group's norms, which will eventually guide the members' behaviors. Norms refer to the behaviors or practices that are either required or expected of the members of a particular group. These norms can include things like communication styles, decision-making processes, and expectations for participation.