Final answer:
Gatekeeping helps to regulate behavior within a group by monitoring and controlling the flow of information or decision-making. The correct option is: C) regulate behavior.
Explanation:
The group maintenance behavior of gatekeeping helps to regulate behavior. Gatekeeping involves individuals in a group monitoring and controlling the flow of information or decision-making within the group. It ensures that group members adhere to certain norms, rules, or standards of behavior. For example, in a classroom setting, a teacher may play the role of a gatekeeper by regulating the discussion and ensuring that everyone gets a chance to participate.