Answer:
A.
Step-by-step explanation:
Plessy v. Ferguson was a Supreme Court decision that upheld the validity of racial segregation, popularly known as "separate but equal." It validated numerous state legislation implemented in the South to re-establish racial segregation.
racial segregation is when your taking rights away from people just because of there race and in this case preventing African Americans to vote is taking away there rights to vote.
hope this helps
have an awesome day -TJ