Question

the court case plessy v. ferguson challenged the legality of \separate but equal\ schools. poll taxes and literacy tests. scare tactics to enforce jim crow laws. racially segregated train cars.

Explanation:

The Plessy v. Ferguson case centered on Homer Plessy, who was of mixed - race, refusing to sit in a "colored" train car. It challenged the constitutionality of racially segregated train cars and established the "separate but equal" doctrine. Poll taxes and literacy tests, as well as scare tactics for Jim - Crow laws, were not the focus of this case.

Answer:

racially segregated train cars.