The correct option is C Rajguru
The young men influenced by socialist ideas decided to set up a nation wide revolutionary organisation. Prominent among them were Chandrashekhar Azad, Bhagat Singh, Rajguru, Sukhdev etc. All these revolutionaries were secular in their thoughts. In 1928 in the meeting held at Feroz Shah Kotla ground in Delhi, these young men established the organisation called ‘Hindustan Socialist Republican Association’. The work of gathering arms and execution of programmes was entrusted to a seperate wing of the organisation. This wing was called ‘Hindustan Socialist Republican Army’ and Chandrashekar Azad was the chief of this wing. Members of this organisation carried out many revolutionary activities. Bhagat Singh and Rajguru fired bullets and killed an officer named Saunders in order to avenge the death of Lala Lajpat Rai.