Answer : 3. "रणथम्भौर राष्ट्रीय पार्क"
Explanation :

Desert National Park is located in the Thar Desert of Rajasthan. It is 40 kilometers away from Jaisalmer district. This park is not only the largest park in the state but there is no national park equal to it in the whole of India. The total area of the park is 3162 square kilometers.