Q. If you want to see gharials in their natural habitat, which one of the following is the best place to visit?

Answer: (b) Chambal River

A sanctuary for gharials (freshwater crocodiles) spread over 1600 sq km created along the Chambal River.

More than 5,000 gharials (Gavialis gangeticus) were born in the latest hatching season (June-July) at the National Chambal Sanctuary on the tri-junction of Uttar Pradesh, Madhya Pradesh and Rajasthan.
Apart from gharials, 400 mugger crocodiles (Crocodylus palustris) also hatched out of eggs at the sanctuary and will soon be released into the river.
Scientist believe that Red-crowned turtle and birds like the Indian skimmer on this stretch of the Chambal are more threatened than gharials.

Bhitarkanika National Park is a large national park in northeast Kendrapara district of Odisha in eastern India. It is spread for 145 km2 and Bhitarkanika is the second-largest Mangrove ecosystem of India.
It is the breeding place for the endangered saltwater crocodiles, which are the prime attractions of the sanctuary.

Pulicat Lake is the second largest brackish water lagoon in India, (after Chilika Lake).
Major part of the lagoon comes under Tirupati district of Andhra Pradesh. It is present in the Coromondal Region i.e. Andhra Pradesh–Tamil Nadu Border.
The barrier island of Sriharikota separates the lake from the Bay of Bengal and is home to the Satish Dhawan Space Centre.
The lake encompasses the Pulicat Lake Bird Sanctuary.
Flamingo Festival is held every year to promote tourism in Pulicatlake and Nellapattu. It has been organised for the past 12 years
The primary inflows to the Pulicat Lake are Arani, Kalangi and Swarnamukhi.
About 96% of the Pulicat Lake is present in Andhra Pradesh while only 3% is present in Tamil Nadu.
The Buckingham Canal, a navigation channel, is part of the lagoon on its western side.

Deepor Beel

It is one of the largest freshwater lakes in Assam and the State’s only Ramsar site besides being an Important Bird Area by Birdlife International.
It is located towards the southwest of Guwahati city, Assam and is the erstwhile water channel of River Brahmaputra.
The lake expands up to 30 sq. km in summer and reduces to about 10 sq. km in the winter. The wildlife sanctuary measures 4.1 sq. km within this wetland (beel).