Working to ensure that all public schools provide the same high level of education is an example of

Social justice

Social justice is the name that is given to the idea of encouraging fair and just relations between individuals and society. Social justice defends the notion of distributing wealth and opportunities among all members of society. It also tries to reduce economic and social inequalities among different social groups. Some concepts that are related to social justice are the breaking of barriers for social mobility, the creation of safety nets and economic justice.

answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;