Ramanathapuram was an important feudatory state known for its rulers, the:

Marudhu Brothers
Chera Kings
Sethupathis
Hoysala Dynasty

The correct answer is: c) Sethupathis.

The Sethupathis were a dynasty of Tamil Hindu rulers who ruled the Ramanathapuram region of Tamil Nadu from the 13th to the 16th centuries. They were feudatories of the Chola Empire and later the Vijayanagara Empire. The Sethupathis were known for their military prowess and their patronage of art and literature.

The Marudhu Brothers were a group of three brothers who led a rebellion against the British East India Company in the early 19th century. The Chera Kings were a dynasty of Tamil Hindu rulers who ruled the Chera kingdom in southern India from the 3rd century BCE to the 13th century CE. The Hoysala Dynasty was a dynasty of Kannada Hindu rulers who ruled the Hoysala kingdom in southern India from the 11th to the 14th centuries CE.

The Sethupathis were a powerful and influential dynasty that played a significant role in the history of Tamil Nadu. They were known for their military prowess, their patronage of art and literature, and their contributions to the development of the Ramanathapuram region.