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 children in California public schools, arguing that it was a violation of their rights to equal protection under the law. The case was a significant step towards desegregation and laid the groundwork for future civil rights cases. If you have more questions or need further assistance, feel free to ask!