Answer:
A. groups of people who share a common desires, needs, or political positions, and are active in the political arena, often by hiring lobbyists.
Step-by-step explanation:
The special interest groups share a common desire to affect government policy to benefit themselves. Through lobbying, they try and attempt to achieve their goals. They do so by attempting to pressurizing policy makers in order to gain policy outcomes in their favour. An example is the AMERICAN FEDERATION OF LABOR - CONGRESS OF INDUSTRIAL ORGANISATIONS (AFL - CIO).