The correct option is C Ragunatha Nayak
The most popular Nayak of Tanjore was Ragunatha Nayak. Raghunatha Nayak was the third ruler of Thanjavur, southern India, from the Nayak dynasty.He is considered to be the greatest of the Thanjavur Nayak kings. HIs reign is recognized for Thanjavur in literature, art and Carnatic music.