Correct Answer: (b) Yatindranath, Ajay Ghosh, Phanindranath Ghosh
Solution:No organization by the name of Hindustan Socialist Democratic Union has existed in history. In Srikrishan Saral book Indian Revolutionaries 1757–1961, Vol. 1-3, the name of the organization formed by Bhagat Singh, Chandrashekhar Azad, and Sachindra Sanyal etc. in the year 1928 has been given as Hindustan Socialist Democratic Union but in contemporary documents, authentic books of history, the name of the organization has been given as ‘Hindustan Socialist Republican Association (HSRA)’. The error in the question asked is that there is no organization by the name of Hindustan Socialist Democratic Union and considering the names of founders given in options, Gopen Chakravarti and Dham Goswami were members of the Calcutta Anushilan Samiti associated with the communist movement and accused in Meerut conspiracy, but both of them were not members of HSRA. Vyomesh Chandra Banerjee was a moderate leader and the first president of Indian National Congress. None of the options are correct from this point of view. UPPSC has considered option (b) as correct in the initial answer key.