How did the ruling in Plessy v. Ferguson affect the legalities of segregation?

A. It set legal precedent for future court cases.

B. It implemented desegregation legislation.

C. It redefined the concepts of "separate but equal."

D. It discouraged people from continued protests.

C is the correct answer. The case Plessy v Ferguson was about Homer Plessy, a mixed race man, who sat in a white-only railroad car. He was asked to move to the ‘colored’ car but refused and was arrested. The judge maintained that the law was right and the cars were separate but equal.