A popular beach destination in Tamil Nadu is:

Marina Beach
Kovalam Beach
Juhu Beach
Baga Beach

The correct answer is Marina Beach. It is the longest beach in India and the second longest beach in the world, stretching 13 kilometers along the Bay of Bengal in the city of Chennai. It is one of the most popular tourist destinations in Chennai, and is known for its wide, sandy beach, its promenade, and its many temples and other historical monuments.

Kovalam Beach is a popular beach destination in the Indian state of Kerala. It is located about 16 kilometers from the city of Trivandrum. The beach is known for its white sand, its clear blue water, and its palm trees. It is a popular spot for swimming, sunbathing, and surfing.

Juhu Beach is a popular beach destination in the Indian state of Maharashtra. It is located in the city of Mumbai. The beach is known for its wide, sandy beach, its promenade, and its many restaurants and bars. It is a popular spot for swimming, sunbathing, and water sports.

Baga Beach is a popular beach destination in the Indian state of Goa. It is located in the town of Baga. The beach is known for its white sand, its clear blue water, and its lively nightlife. It is a popular spot for swimming, sunbathing, and partying.