What example represents a public interest group?

A public interest group is an organization that advocates for causes that benefit the public at large rather than specific interests or sectors. Common Cause fits this definition well as it is dedicated to promoting government accountability, electoral fairness, and campaign finance reform, all key issues affecting the general populace. It works to ensure that every citizen's voice is heard in the democratic process, which aligns perfectly with the definition of a public interest group.

In contrast, the National League of Cities focuses on the interests of local government officials and urban areas, while the American Medical Association represents healthcare professionals and their industry, advocating for policies that benefit their members rather than the general public. Labor unions, similarly, are organized to protect the interests of workers across specific industries or sectors, thus serving a more narrow interest rather than a broad public one.