The Supreme Court case that overturned the doctrine of "separate but equal" was "Plessy v. Ferguson".
Answer: Option B
Step-by-step explanation:
"Plessy v. Ferguson" was the U.S. Supreme Court's decision that lifted the constitutionality to racial isolation laws for public needs and development as long as the separated facilities were upto mark in quality a belief that came out was termed as "separate but equal".
The decision included Homer Plessy case which was generated in 1892 when seven-eighths white and one-eighth black ancestry called as "octoroon" , the resident of New Orleans intentionally violated "Louisiana's Separate Car Act of 1890", which demanded "equal, but separate" non-white and white passenger's train car accommodations.