Which of these best describes an interest group?

 An interest group, also known as an advocacy group, pressure group, lobbying group, or special interest, is an organization that aims to influence public policy and decision-making in favor of a specific cause or interest. Interest groups are formed by individuals, organizations, or businesses that come together to promote their shared concerns and to exert influence on political and policy-making processes. They typically function by lobbying government officials, disseminating information to the public to shape public opinion, mobilizing constituents, and sometimes engaging in electioneering activities by supporting candidates who are sympathetic to their causes.

Interest groups vary widely in size, influence, and methods. Some are large and powerful, like business or industry associations, while others might be smaller, such as a local advocacy group focused on a specific environmental or social issue. The best way to describe an interest group is as an organized entity that seeks to influence government policy or public opinion to advance a specific agenda or interest that they represent.