The answer 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 response accurately summarizes how Plessy v. Ferguson upheld racial segregation under the "separate but equal" doctrine, which legitimized discriminatory practices, and how Brown v. Board of Education overturned that doctrine specifically in the context of public education, emphasizing that separate educational facilities are inherently unequal and thus unconstitutional.