Question

what issue did plessy v. ferguson address?
the legality of poll taxes in federal elections
the legality of searches and seizures without a warrant
the legality of racial segregation

Explanation:

Plessy v. Ferguson was a landmark U.S. Supreme Court case centered on state-mandated racial segregation in public facilities. The case upheld the "separate but equal" doctrine, directly addressing whether such racial segregation was legally permissible. The other options relate to different legal issues unrelated to this case.

Answer:

the legality of racial segregation