The correct answer is "The ruling in Brown v. Board of Education did not immediately end segregation because the Supreme Court did not offer a new policy."
The court's decision was unanimous overruling the "separate but equal" principle and declaring segregation in public schools unconstitutional. However, the resolution was vague and only instructed all states to begin desegregation plans "with all deliberate speed" without any new method or process to end segregation in public schools. The Supreme court delegated the task to local courts and it was not until 1964 that two provisions within the Civil Rights Act allowed the federal government to enforce school desegregation.