Detailed Solution:
The correct answer is “Chandra Shekhar Azad”.
The Hindustan Republican Association (H.R.A.) was formed in 1924, as a radical revolutionary organization under the aegis of Ram Prasad Bismil, Ashfaqulla Khan, Sachindra Nath Bakshi, Sachindranath Sanyal, and Jogesh Chandra Chatterjee, who were also the primary members.
Hindustan Socialist Republican Army (HSRA) was established in 1928 at Feroz Shah Kotla in New Delhi by Chandrasekhar Azad, Bhagat Singh, Sukhdev Thapar and others.