Correct Answer: Raja Ram Mohan Roy

Solution : The correct option is Raja Ram Mohan Roy .

Raja Ram Mohan Roy, a prominent Indian social reformer, envisioned reformist religious organisations as powerful tools for driving social and political change. In pursuit of his vision, he established several influential associations during the 19th century. In 1814, he founded the Atmiya Sabha, followed by the establishment of the Calcutta Unitarian Association in 1821. Notably, in 1828, he laid the foundation for the Brahmo Sabha, which eventually evolved into the Brahmo Samaj.