The correct option is A Election of the President to the INC
The Indian National Congress (INC) split into two groups - the extremists and the moderates, at the Surat Session in 1907. The immediate cause of split in the INC at its Surat Session was Election of the President to the INC. Moderates wanted Lala Lajpat Rai whereas moderates wanted Rash Behari Gosh. Dr. Rash Behari Ghosh was elected but the extremists had an objection to this election.