The correct option is B The Indian Social Conference
Explanation:
The Indian Social Conference was founded by M.G. Ranade and Raghunath Rao. It focussed attention on the social issues of importance; it could be called the social reform cell of the Indian National Congress, in fact. The conference advocated inter-caste marriages, opposed polygamy and kulinism. It launched the ‘Pledge Movement’ to inspire people to take a pledge against child marriage.