Answer:
Solidarity incentive
Explanation:
Someone who joins an interest group because he or she believes in the ideals of the group and wants a sense of belonging and community with others who share their beliefs is acting for solidarity incentive.
Solidarity incentives are non material reasons of joining an interest group such as; sense of belonging to a cause, fun. On the contrary, people who join an interest group based on material things they will benefit such as money, gifts services are acting based on material incentives.
