Would send troops or weapons
I believe the answer is "C. tried to force people to improve their morals."
Hoover called prohibition the "Noble Experiment" because the goals (keeping families together, eliminating alcohol abuse) were deemed "noble". While these goals were never met, the nickname caught on.
Most importantly, the Harlem Renaissance instilled in African Americans across the country a new spirit of self-determination and pride, a new social consciousness, and a new commitment to political activism, all of which would provide a foundation for the Civil Rights Movement of the 1950s and 1960s.