Why are there so many interest groups and social movements?

A. Because most people join groups even when they don't directly benefit.
B. Because the free rider problem is easy to overcome.
C. Because it's human nature to work with people to achieve a common goal.
D. Because groups cannot agree on which people to run for public office.



Answer :

Final answer:

Interest groups and social movements exist to address the free-rider problem and mobilize members effectively.


Explanation:

Interest groups and social movements exist for various reasons, one of which is to overcome the free-rider problem. The free-rider problem occurs when individuals benefit from the actions of a group without actively contributing. Groups with financial resources or smaller, well-organized structures are more effective in mobilizing members and addressing collective action problems.


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