Correct Answer: (c) 1 and 4
Solution:September, 1928 Hindustan Socialist Republican Association (HSRA) (a revolutionary organization) was established at Feroz Shah Kotla, New Delhi under the leadership of Chandra Shekhar Azad. This organization worked more dangerously from 1928 to 1931. December, 1928 Bhagat Singh, Chandrasekhar Azad, and Rajguru killed the Assistant Police Superintendent John Saunders in retaliation to his orders of lathi charge during the procession in opposition to the Simon Commission. Two members of HSRA, Bhagat Singh and Batukeshwar Dutt, also threw a bomb in Central Legislative Assembly on 8 April, 1929, when the proceedings were going on for trade dispute and safety bills.