The correct answer is: d) All of the above.
Tamil Nadu has a significant population of Scheduled Castes (SCs), Scheduled Tribes (STs), and Other Backward Classes (OBCs).
Scheduled Castes (SCs) are the former “untouchables” of Hindu society. They are the lowest social group in India, and have historically been subjected to discrimination and oppression. The Indian Constitution provides for special measures to improve the social, educational, and economic status of SCs.
Scheduled Tribes (STs) are indigenous peoples of India. They are often referred to as “tribals” or “adivasis”. STs have their own unique cultures and languages, and many live in remote areas. The Indian Constitution provides for special measures to protect the rights of STs and to promote their development.
Other Backward Classes (OBCs) are a social group that is not included in the SCs or STs. OBCs are often referred to as “backward classes” or “minorities”. OBCs are a heterogeneous group, and there is no single definition of who is an OBC. However, OBCs are generally considered to be those who are socially, educationally, and economically disadvantaged. The Indian Constitution provides for special measures to improve the social, educational, and economic status of OBCs.
According to the 2011 Census of India, the population of Tamil Nadu is 72,138,958. Of this, 19.6% are SCs, 1.1% are STs, and 26.5% are OBCs. This means that Tamil Nadu has a significant population of all three of these social groups.