The answer to the blank is none of the above as the answer to the blank is Upward Social Mobility.
Social mobility refers to the individuals or groups movement in social position and upward social mobility is the ability to move up in social class and the opposite is the downward mobility. The movement or the social mobility is based on education, occupation, wealth and other social variable.
The differance is that clastic rocks are denoting rocks composed of broken prices of older weathered and eroded rocks , an organic rock is a sedimentary rock that is composed of remains of plants and animals, and a chemical sedimentary rock is a rock formed by the depostion of material at the earth's surface and within bodies of water. I hoped this helped you.
The help end segregation of Caucasian people (White people) and African-American people (Black people)