The correct answer is Dr Babasaheb Ambedkar. Dr Babasaheb Ambedkar: Dr B R Ambedkar was born on 14 April 1891 at Mhow in Madhya Pradesh. His father was an army officer who held the rank of Subedar. His associations include Bahishkrit Hitakarini Sabha (1924), Mahad Satyagrah, 1927, Temple Entry Movements, 1930, Depressed Classes Movement. The perception and humiliation haunted Ambedkar at the Army school. Fearing social objection, the teachers were also used to divide the students of lower class from that of Brahmins and other upper classes. The untouchable students were often asked by the teacher to sit outside the class. He worked for total destruction of the caste system. Hence option 3 is correct. Additional Information Mahatma Jyotiba Phule: He was a great social activist. He belonged to the caste of gardeners and his family was mostly illiterate. He founded the Satyashodhak Samaj on September 24, 1873. His wife-Savitri bai was also an active participant in the movement. He believed that religious figures like Rama are executed by the Brahmin as a means for crushing the lower caste. His published work includes- Gulamgiri, Satyashodhak Samajokt Mangalashtakasah Sarva Puja-vidhi, Sarvajanic Satya Dharmapustak, Shetkaryacha, Asud and Powada : Chatrapati Shivajiraje Bhosle Yancha (Life of Shivaji).