Answer:
A. freedom rides is the correct answer.
Step-by-step explanation:
The rides taken by the civil rights activists who rode the interstate buses in the southern states to challenge the segregation were known as freedom rides. It started in 1961 and continued in the following years. The rides aimed to challenge the US supreme court cases of Boynton v. Virginia and Morgan v. Virginia as the southern states did not apply the ruling of these two cases. The first freedom rides was taken on May 4, 1961 and left Washington D. C for New Orleans.