Answer : 3. "बीकानेर "
Explanation :

1. “Dudhwa Khara Movement”, was an important independence movement in 1942.

2. Some important people who led this movement were Hanuman Singh Budania and Nyola Ram Jaria.

3. The leaders participated in “Bikaner Rajya Praja Parishad” to join the freedom struggle.

4. Dudhwa Khara is a village located in Churu district of Rajasthan.

5. This place has many designed mansions and camel safaris.