The group of people who did not fully own the land they worked, giving a portion of their product to the owner of the land, who did not see prosperity during this time were called:
A. Migrants
B. Sharecroppers
C. Assembly line workers
D. Farmers

B. Sharecroppers

Explanation:

It can't be migrant because a migrant is a person who moves from one place to another, especially in order to find work or better living conditions.

It can't be assembly line workers because an assembly line worker fabricates parts and joins them together to construct products like aircrafts, automobiles, electronics and household appliances. Some assemblers specialize in a particular part, such as electric motors, or a type of product, such as office machinery.

It can't be a farmer because a farmer has their personal plot of land.

It has to be a sharecropper, as the name implies.

It is a tenant farmer who gives a part of each crop as rent.Sharecropping is when a landowner allows a tenant to use the land in return for a share of the crops produced on the land. Sharecropping has a long history and there are a wide range of different situations and types of agreements that have used a form of the system. Some are governed by tradition, and others by law.

are their options?

otherwise i can't