The correct answer is: D. Keshav Chandra Sen
Keshav Chandra Sen was a Bengali social reformer, writer, and journalist. He is considered one of the pioneers of the Indian Renaissance. He founded the Indian Reforms Association in 1870. The association was a forum for discussion and debate on social reform issues. It also worked to promote education and women’s rights.
A. Narayan Guru was a social reformer and religious leader from Kerala. He is considered one of the founders of the Ayyavazhi movement.
B. Swami Vivekananda was a Hindu monk and philosopher. He is considered one of the most important figures in the Hindu Renaissance.
C. Krishna swami Aiyar was a Tamil scholar and politician. He was a member of the Indian National Congress and served as the Chief Minister of Madras Presidency from 1921 to 1926.