The correct answer is competition helps limit the power of each group.
An interest group is an organization of people who have a similar goal they want to achieve. This usually focuses on a specific part of American society. These interests groups try to accomplish their goals by working with politicians who shape laws and work on different sub committees.
These interests groups try to persuade Congressmen and women that would help achieve their goals. However, members of Congress must weigh the needs of one interest group with the needs of another interest group. This competition ensures that there is no monopoly on political power.
