Which organization is known for defending rights and freedoms in the United States?

• A. NAACP
• B. American Civil Liberties Union (ACLU)
• C. ACDL
• D. AFL-CIO

Answer: (B)

Defending rights and freedoms means protecting civil liberties—the fundamental freedoms guaranteed by the Constitution, such as free speech, freedom of assembly, religious liberty, and due process. The American Civil Liberties Union specializes in that mission, using lawsuits and advocacy to defend these rights across many contexts and for a broad range of people. Founded in the early 20th century, it has become known for challenging laws and government actions that threaten core liberties, making it the best fit for questions about defending rights and freedoms in the United States. Other groups focus on specific areas—like the NAACP on racial justice or AFL-CIO on workers’ rights—so they don’t cover the same broad civil-liberties mandate. The remaining option isn’t a recognized major defender of civil liberties, so it doesn’t fit as well.