Final answer:
The National Association for the Advancement of Colored People (NAACP) is best described as a civil rights interest group. It advocates for equal opportunity and conducts voter mobilization.
Step-by-step explanation:
The National Association for the Advancement of Colored People (NAACP) is best described as a civil rights interest group. It was founded in 1909 and is one of the oldest and most widely recognized civil rights organizations in the United States. The NAACP advocates for equal opportunity, conducts voter mobilization, and leads grassroots campaigns for civil rights.