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 âdetrimental effect upon the colored childrenâ and contributed to âa sense of inferiority,â but still upheld the âseparate but equalâ doctrine." provided by https://www.history.com/topics/black-history/brown-v-board-of-education-of-topeka