How did the U.S. Supreme Court show a change of interpretation in the case of Brown v. Board of Education?

The Brown decision completely overturned the decision made in Marbury v. Madison.
The Brown decision reversed the decision of Plessy v. Ferguson for public schools.
The Brown decision said segregation was legal in the nation when before it had been illegal.
The Brown decision made all laws related to teaching foreign languages illegal.

The correct answer is: The Brown decision reversed the decision of Plessy v. Ferguson for public schools.