The passage states, "At its second annual session in 1928, Sir Purshottamdas, President of FICCI, said that 'we can no more separate our politics from our economics.'"
This names Sir Purshottamdas directly as FICCI's President in 1928, distinct from G.K. Gokhale, who presided over the 1905 Banaras Congress session, and G.D. Birla, who is mentioned only as one of the rising entrepreneurs of the period.
So option 3 is correct.