Answer:
Social stratification - is a matter of inequality and beliefs about why people should be unequal .
Explanation:
Social stratification -
It is the type of social differentiation ,in which the members of the society are combined or grouped into socioeconomic strata based on the social or political power , wealth , income , is known as Social stratification .
Hence , this is the matter of beliefs and inequalities .
Hence , from the question ,
The correct statement about Social stratification is the last one .