The 'Satyashodhak Samaj' was founded by whom among the following?

The Devadasi system in the princely state of Travancore was abolished during the reign of:

The Hindu Widows' Remarriage Act, drafted during the tenure of Lord Dalhousie, was passed in the year ______.

'Reformers have to face opposition from our near and dear ones—parents, wives, daughters and countrymen with whom we have to travel through life.' This statement was made by the social reformer Wamanrao Madhavrao Kolhatkar, who hailed from which region?