The correct option is B. Southern Democrats blocked to the passing of federal anti-lynching law.
What is NAACP?
The National Association for the Advancement of Colored People, or NAACP, is the nation's oldest and biggest civil rights group. It was founded in 1909 and is headquartered in Washington, D.C. Activists from both races came together in New York City to form it, in part as a reaction to the country's ongoing brutality against African Americans.
Thus, Southern Democrats, who constituted a potent bloc, shut down the US Senate with a filibuster. Southern Democrats defended their opposition to the bill by asserting that lynchings were a response to rapes and that lynchings were a problem that states should handle on their own.
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