Answer:
B.
the doctrine of separate but equal
Step-by-step explanation:
Plessy v. Ferguson (1896) - a decision of the US Supreme Court, legally formalizing racial segregation and confirming its compliance with the American constitution. This decision reinforced the phenomenon of racial segregation in the United States. Several states have passed laws that establish segregation in schools, hotels, restaurants, hospitals, transportation, and toilets. There were two Bibles in the courts, one of which was intended to take the oath of allegiance to blacks. The doctrine is known as "separate but equal."