Who is known as Periyar (the respected), a strong supporter of atheism and founder of Dravidar Kazhagam?

Ramasami Naicker

The correct answer is Option 3 - Ramasami Naicker

Ramasami Naicker is known as Periyar (the respected), a strong supporter of atheism and founder of Dravidar Kazhagam.

E.V. Ramasami Naicker (1879-1973): Known as Periyar (the respected); strong supporter of atheism; famous for his anticaste struggle and rediscovery of Dravidian identity; initially a worker of the Congress party; started the self-respect movement (1925); led the anti-Brahmin movement; worked for the Justice party and later founded Dravidar Kazhagam; opposed to Hindi and domination of north India; propounded the thesis that north Indians and Brahmins are Aryans.