Answer : 1. "Mahatma Gandhi "
Explanation :

1. Rajasthan Seva Sangh was formed by Arjun Lal Sethi following the personal advice of Mahatma Gandhi.

2. Rajasthan Seva Sangh was founded in 1919 in Wardha by Arjunlal Sethi, Kesari Singh Baruth and Vijay Singh Pathik.

3. This institution made an important contribution to the development of political consciousness.

4. The main objective of 'Rajasthan Seva Sangh' was to awaken political consciousness among the people to remove their difficulties and to redress popular grievances.

5. In the Amritsar Congress in 1919, with the efforts of Pathik ji, Bal Gangadhar Tilak proposed Bijolia.