Answer:
I would say that the answer is d.
Explanation:
"The case went before the U.S. District Court in Kansas, which agreed that public school segregation had a “detrimental effect upon the colored children” and contributed to “a sense of inferiority,” but still upheld the “separate but equal” doctrine." provided by https://www.history.com/topics/black-history/brown-v-board-of-education-of-topeka
