C. Concluded that separate educational facilities are inherently unequal.
Step-by-step explanation:
The Brown v. Board of Education case first started when a young African American girl had to walk over a mile to get to her segregated school when there was a white school just a couple blocks away from her home.
This eventually reached the Supreme Court, as "separate but equal" facilities were not inherently equal and this was proof of that. The Supreme Court ended up agreeing and also stating that facilities that are "separate but equal" will never truly be equal.
This decision ending up making segregation in public schools illegal, which was a big step in obtaining equality for African Americans. As you may have guessed, many people in the South hated this decision and would go out of their way to prevent African Americans into schools. While the Brown v. Board of Education case made segregation in public schools illegal, it did take a number of years for all of the schools to finally become integrated.