The correct answer is D. All of the above.
The Census of India is a decennial census of India, conducted by the Office of the Registrar General and Census Commissioner, India. It is the largest civil registration exercise in the world, and provides a comprehensive snapshot of the country’s population, economy, and social structure.
The Census provides data on a variety of topics, including population size, age, sex, religion, language, literacy, and occupation. It also provides data on the percentage of population belonging to Scheduled Castes (SC), Scheduled Tribes (ST), and Other Backward Classes (OBC).
Scheduled Castes (SC) are groups of people who have been historically discriminated against in India. They are listed in the Constitution of India, and are entitled to certain benefits, such as reservations in education and employment.
Scheduled Tribes (ST) are groups of people who live in tribal areas in India. They are also listed in the Constitution of India, and are entitled to certain benefits, such as reservations in education and employment.
Other Backward Classes (OBC) are groups of people who are not SC or ST, but who are considered to be socially and educationally backward. They are not listed in the Constitution of India, but are entitled to certain benefits, such as reservations in education and employment.
The Census provides data on the percentage of population belonging to SC, ST, and OBC, which is used to determine the allocation of resources and benefits to these groups.