With whose efforts was the Second Bihar Provincial Congress Session held?

Explanation

As a result of the dedicated efforts of Shri Deepnarayan Singh, the second session of the Bihar Provincial Conference was held at Bhagalpur on 9–10 April, 1909. Dr. Sachchidanand Sinha was the President of this session. G. K. Gokhale was present in the session as a special invitee. It is noteworthy that in the given question, “Bihar Provincial Conference” should be used instead of “Bihar Provincial Congress”.