What was the common goal of the sit-in movement and the Freedom Rides?
Your correct answer is C, to end segregation in public areas, such as restaurants and restrooms. A cannot be correct because they did not use legal means, such as lawsuits, etc. to seek redress. They rather chose to publicly draw attention to their cause by public demonstrations such as sitting at restaurant counters or riding on public transportation which previously was segregated. Segregation in public schools was accomplished by legal means, namely the Supreme Court Case of Brown v. Board of Education in which the Warren Court held that segregation had no place in American society. The sit in movement and Freedom riders certainly had no motive to force segregationists to respond violently, although many of them did, often by terrible means. The protesters sought to bring about change by peaceful, non-violent means which would preclude violent responses.