The best response that analyzes the impact of the Supreme Court case rulings of Plessy v. Ferguson and Brown v. Board of Education on individual freedoms and equal protection is:
Plessy v. Ferguson created the separate but equal doctrine and Brown v. Board ended the separate but equal doctrine in public education.
This answer accurately captures the essence of both rulings: Plessy v. Ferguson (1896) established the "separate but equal" doctrine, which upheld the legality of racial segregation, while Brown v. Board of Education (1954) overturned that doctrine specifically in the context of public education, declaring that separate educational facilities are inherently unequal and thus unconstitutional under the Equal Protection Clause of the Fourteenth Amendment.