The lowest caste is considered to be the B) Shudras. This caste is made up of individuals who work as semi-skilled or un-skilled workers. Also the "Dalits" or untouchables are considered the most ostracized caste of Indian society.
The Shudras are the lowest members of the caste system, they are considered the lowest because they do un-skilled jobs, they are also called the labourers and are in the base of the caste system, they make for the most of the population, the caste system in India used to segregate people in different parts of the cities, and the highest caste would live separated from the lowest, even not sharing food or water.