The correct answer is (b). Kuttanad is a region in the state of Kerala, India, that is famous for being the region with the lowest altitude in India. It is located in the south-central part of the state, and is bordered by the Arabian Sea to the west, the Western Ghats to the east, and the Periyar River to the north. The region is known for its unique geography, which is characterized by its low-lying land and its extensive network of canals and backwaters. Kuttanad is also a major rice-producing region, and is home to a number of important temples and churches.
(a) A fresh water lake: Kuttanad is not famous for a fresh water lake. The largest lake in Kerala is Vembanad Lake, which is located to the north of Kuttanad.
(c) A coral island: Kuttanad is not famous for a coral island. There are no coral islands in Kerala.
(d) The western most point of India: Kuttanad is not famous for being the western most point of India. The western most point of India is Indira Point, which is located in the state of Tamil Nadu.