The correct option is B A-3, B-4, C-2, D-1
The Mettur dam in Salem district is one of the oldest dams in India and also the largest in Tamil Nadu constructed in 1934. The Bhavani Sagar dam built across the Bhavani river is one of the world’s largest earthen dams located in Erode district. Amaravathi dam is located in the Indira Gandhi Wildlife Sanctuary in Tiruppur district. The Sathanur Dam is another dam across river Thenpennai. It is situated on Chennakesava hills in Tiruvannamalai district. The Sathanur dam is famous for being featured in many movies. The large crocodile farm, a fish grotto, and parks maintained inside the dam make it a tourist attraction.