Which tactic involved activists riding interstate buses into the segregated South to challenge non-enforcement of Supreme Court rulings?

• A. Freedom Rides
• B. Sit-ins
• C. March on Washington
• D. Freedom Summer

Answer: (A)

Freedom Rides were a direct-action tactic in which activists boarded interstate buses into the segregated South to test and force compliance with Supreme Court rulings that banned segregation in interstate travel. By traveling across state lines in integrated groups and using facilities at bus terminals, they exposed ongoing non-enforcement and prompted federal intervention to protect riders and enforce desegregation. The other options describe different tactics or campaigns (sit-ins targeted local venues like lunch counters, the March on Washington was a large rally, Freedom Summer was a voter-registration drive) and do not fit this specific interstate, court-enforcement challenge.