Answer : 3. "भैरों सिंह शेखावत"
Explanation :

1. Antyodaya Scheme in Rajasthan was started in 1977 in the Chief Minister's office of Bhairo Singh Shekhawat. This scheme was launched to provide assistance to the poorest families of Rajasthan. Under this scheme, poor families are provided access to basic amenities like food grains, education, health, and housing.

2. Bhairo Singh Shekhawat was the Chief Minister of Rajasthan from 1977 to 1980. He was a member of the Bharatiya Janata Party. He initiated many important schemes and policies in Rajasthan, including Antyodaya Yojana.