The correct option is C Bhagat Singh
Hindustan Socialist Republican Association(HSRA) was a revolutionary organisation established in 1928 at Feroz Shah Kotla in New Delhi by Chandrasekhar Azad, Bhagat Singh, Sukhdev Thapar and others. The sudden withdrawal of the Non-Cooperation movement led to a political vacuum whih resulted in formation of revolutionary movements by the some freedom fighters. Some of them associated with HSRA were Bhagat Singh, Ram Prasad Bismil, SC Bose, Laxmi Sahgal, etc.