Answer:
The answer would be A) The Supreme Court's decision in Brown overturned the court's decision in Plessy.
Explanation:
In Plessy V. Ferguson (1896) the Supreme Court ruled that "separate but equal" or the segregation of schools was constitutional
In Brown v. Board of Education (1954) this idea of separate but equal was overturned, stating that the racial segregation of public schools was unconstitutional