Question

although brown v. board of education established that the segregation of schools was unconstitutional,
many white southerners strongly resisted integration.
civil rights activists feared integration would lead to violence.
african americans did not want to attend all - white schools.
many people in the north strongly resisted integration.

Explanation:

After the Brown v. Board of Education ruling, widespread and fierce resistance to school integration came primarily from white Southerners, who used various tactics like "massive resistance" to avoid desegregating public schools. The other options are incorrect: civil rights activists pushed for integration, African Americans fought for the right to attend previously all-white schools, and Northern resistance was not as widespread or intense as Southern resistance.

Answer:

A. many white Southerners strongly resisted integration.