Answer : 3. "विठ्ठल रामजी शिंदे "
Explanation :

Vitthal Ramji Shinde established this organization on 16 October 1906. His early spiritual awakening came from his readings of Sant Tukaram, Sant Eknath, and Sant Ramdas of Maharashtra. V.R.Shinde was a prominent campaigner on behalf of the Dalit movement. Aims of this mission were to try to get rid of untouchability, educate people from lower strata, help them to get Jobs, solve their social problems.