Answer:
Social Standing or Society Ranks
Explanation:
It refers to a system by which a society ranks categories of people in a hierarchy. Basically, society’s categorization of its people into rankings of socioeconomic tiers based on factors like wealth, income, race, education, and power.
The best option from the list would be that "Horace Mann" is best associated with education reform in the U.S., since he sought to reform the system before "reform" in the realm of education was popular.