The correct answer is (a) Rajasthan.
Sambhar Lake is a large salt lake located in the Indian state of Rajasthan. It is the largest inland saline lake in India and the second largest in Asia. The lake is located in the Thar Desert, about 100 kilometers (62 mi) from the city of Jaipur.
The lake is a major tourist attraction and is also a popular spot for bird watching. The lake is home to a variety of birds, including flamingos, pelicans, and herons.
The lake is also an important source of salt for the Indian economy. The salt is extracted from the lake by solar evaporation.
The lake is a Ramsar site, a wetland of international importance.
The other options are incorrect because:
(b) Gujarat is a state in western India.
(c) Jammu and Kashmir is a state in northern India.
(d) Madhya Pradesh is a state in central India.