The response that best 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 reflects the historical significance of both cases: Plessy v. Ferguson (1896) upheld the constitutionality of racial segregation under the "separate but equal" doctrine, leading to the establishment and enforcement of segregation laws (Jim Crow laws). In contrast, Brown v. Board of Education (1954) overturned that doctrine specifically in the context of public education, ruling that separate educational facilities are inherently unequal, which was a crucial step towards desegregation and the advancement of civil rights.