Correct Answer: Dr. B. R. Ambedkar

Solution : The correct answer is Dr. B. R. Ambedkar.

Dr. B. R. Ambedkar is known as the Father of the Indian Constitution. Belonging to a depressed community himself, Ambedkar was a reformer who stood against the social evil of casteism. He formed Bahishkrit Hitkarini Sabha in 1924 and the All India Depressed Classes Association in 1930. He also penned a newspaper called Bahishkrit Bharat in 1927 and led Mahad Satyagraha in March 1927, which was the first collective effort by Dalits under his leadership.