Question

which amendments did plessy argue made segregation illegal?
the 9th and 10th amendments
the 1st, 4th, and 5th amendments
the 13th, 14th, and 15th amendments

Explanation:

In the Plessy v. Ferguson case, Homer Plessy's legal team argued that state-mandated racial segregation violated the Reconstruction Amendments. The 13th Amendment bans slavery and involuntary servitude, the 14th Amendment guarantees equal protection under the law for all citizens, and the 15th Amendment prohibits voting discrimination based on race—all of which they claimed were violated by segregated public facilities.

Answer:

the 13th, 14th, and 15th amendments