What resulted from the supreme court's ruling in brown v. board of education (1954)?

white resistance to desegregation
the creation of affirmative action programs
rapid integration of schools in northern cities
the passage of new civil rights laws by congress

Brown v. Board of Education (1954) was a Famous Case of US Supreme court, in which they declared "laws establishing separate public schools for black and white students to be unconstitutional" So, white people resisted for this desegregation.

In short, Your Answer would be: Option A

Hope this helps!

A. southerners underestimated republicans eagerness to end slavery.