In the case of plessy v. ferguson, the supreme court focused its decision on the interpretation of the word a. proper b. equal c. constructionism d. necessary

The correct answer is B.

Plessy v. Ferguson was a landarmark decision enacted by the US Supreme Court in 1896 which allowed segregation in public schools, declaring that it did not violate the Equal Protection Clause, guaranteed by the Reconstruction amendments to the US Constitution (14th and 15th), as long as the facilities provided for black and white students were equal in terms of quality. Segregation was not unconstitutional, as long as the "separate but equal" criteria was fulfilled.