The correct answer is D. Ramananda.
Ramananda was a 14th-century Indian Hindu saint and philosopher who is considered to be one of the founders of the Bhakti movement. He was a strong opponent of sectarianism and rites, and he insisted on adoption of Hindi in place of Sanskrit. He believed that all people, regardless of caste or social status, could achieve salvation through devotion to God.
Chaitanya was a 16th-century Indian Hindu saint and reformer who is considered to be one of the most important figures in the Vaishnava tradition. He was a strong advocate of bhakti, or devotion to God, and he is credited with popularizing the chanting of the name of Krishna.
Ramanuja was a 12th-century Indian Hindu philosopher who is considered to be one of the most important figures in the Sri Vaishnava tradition. He was a strong advocate of qualified non-dualism, or Visistadvaita, which holds that Brahman, the ultimate reality, is both one and many.
Sankaracharya was an 8th-century Indian Hindu philosopher who is considered to be one of the most important figures in the Advaita Vedanta tradition. He was a strong advocate of non-dualism, or Advaita, which holds that Brahman, the ultimate reality, is the only thing that exists.
Sanskrit is an ancient Indian language that is considered to be the sacred language of Hinduism. It is a highly complex and sophisticated language that is used in religious texts, philosophy, and literature. Hindi is a modern Indian language that is derived from Sanskrit. It is the most widely spoken language in India and is the official language of India.