The correct option is D Ramanujacharya
Vishnuvardhana was one of the greatest rulers of the Karnataka region and he was the king who really started to establish the Hoysalas as a separate independent dynasty. He was originally a follower of Jainism but later he came under the influence of the Hindu philosopher Ramanujacharya and converted to Hindu Vaishnavism. Ramanuja was a Hindu theologian, philosopher, and one of the most important exponents of the Sri Vaishnavism tradition.