Marina Beach, one of the longest urban beaches in the world, is located in:

Kanyakumari
Rameswaram
Chennai
Mahabalipuram

The correct answer is: c) Chennai.

Marina Beach is located in Chennai, India. It is one of the longest urban beaches in the world, stretching 13 kilometers (8.1 mi) along the Bay of Bengal. The beach is popular with locals and tourists alike, and is a popular spot for swimming, sunbathing, and walking.

Kanyakumari is a town in the Indian state of Tamil Nadu. It is located at the southernmost tip of India, where the Bay of Bengal, the Arabian Sea, and the Indian Ocean meet. Kanyakumari is a popular tourist destination, known for its beaches, temples, and churches.

Rameswaram is an island town in the Indian state of Tamil Nadu. It is located on Pamban Island, which is separated from the mainland by the Pamban Bridge. Rameswaram is a popular Hindu pilgrimage site, known for its temples and shrines.

Mahabalipuram is a town in the Indian state of Tamil Nadu. It is located on the Coromandel Coast, about 60 kilometers (37 mi) from Chennai. Mahabalipuram is a UNESCO World Heritage Site, known for its 7th- and 8th-century rock-cut temples and sculptures.