Legal challenges brought by marginalized groups 1940s and 1950s led most directly to which outcome

The End of Racial Segregation in Public Schools.

Explanation:

Racial segregation was the separation of racial groups in every walk of life.

In the United States, School Segregation became a law with the Jim Crow laws. Before this law was passed, there was segregation in public schools, but after Jim Crow passed the law in 1876, it became a law.

But cases of school segregation by the racial groups were brought to the Supreme Court. Five cases were agreed to be heard in the Supreme Court in 1952. The Supreme Court in 1954, banned the Racial Segregation in the Public schools after hearing the case of Brown vs Board Of Education of Topeka.