Answer:
Special interest groups
Step-by-step explanation:
Special Interest Group is considered as a community, association of people or organization, within a larger organization, with shared interests or concerns, and seek to advance these interests to influence public or government policy in its favour.
In other words, Special Interest Group is a form of group that has political or business aim, and the purpose of its formation is to influence government or public policy in order to achieve their primary aim. For example, influence government to provide subsidy for farmers.
Hence, SPECIAL INTEREST GROUPS are numerically small, but well organized groups that are able to exert a disproportionate effect on political outcomes.