Final answer:
An interest group is an organized group of individuals with common interests who actively work to influence policy makers. They engage in activities like lobbying and advocacy to achieve their goals.
Step-by-step explanation:
An interest group is an organized group of individuals with common interests who are actively trying to influence policy makers. Interest groups are formed to seek to influence political outcomes or alter public policies based on shared concerns or interests. They engage in activities like lobbying, advocacy, and mobilizing their members to support their cause. Examples of interest groups include AARP, which advocates for older Americans, and the San Francisco Democratic Party, which seeks to engage and mobilize Democrats in the city.