Answer:
D. The court ruled that the 14th Amendment did not apply to "separate but equal" public schools.
Step-by-step explanation:
The Brown v. Board of Education (1954) case was a landmark decision of the Supreme Court in which it was established that having "separate but equal" public schools was unconstitutional. This was because the notion violated the Equal Protection Clause of the Fourteenth Amendment. The case was presented by NAACP chief counsel Thurgood Marshall. This case overturned the earlier Plessy v. Ferguson (1896) and was one of the most important victories of the civil rights movement.