Question

why was homer plessy arrested?○ he said his rights had been violated.○ he was clearly of mixed heritage.○ he refused to give his seat to a white person.○ he sat down in a trains whites-only car.

Explanation:

Homer Plessy was arrested in 1892 for intentionally violating Louisiana's Jim Crow "Separate Car Act" by sitting in a train car designated for white passengers, as part of a planned legal challenge to racial segregation laws.

Answer:

He sat down in a train's whites-only car.