The part of the description that speaks of social roles is c. he encourages the other members of his tennis group.
Clifton, as supervisor, helps find common ground between group members, in this case, tennis, to strengthen integration and enable relationships to run in harmony.
A supervisor practices his social role through his communication skills and cohesion to support his team members and harmonize when a conflict arises.
Also, the social role of supervisors focuses on coordinating activities and promoting team collaboration and motivation so that objectives are met.
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