The court case Mendez v. Westminster addressed the unequal treatment of Mexican Americans in

The correct answer is B. public schools.

The court case Mendez v. Westminster (1947) challenged the segregation of Mexican American students in California public schools. The court ruled that the separate schools for Mexican Americans were unconstitutional, paving the way for future desegregation efforts, including the landmark case Brown v. Board of Education. This case highlighted the importance of equal educational opportunities for all students, regardless of their ethnicity.