In this question, we are given a list of sessions (List I) and a list of locations (List II). We need to match each session with its corresponding location.

Option 1: A-4, B-3, C-2, D-1

According to this option, the 1st Session took place in Bombay (4), the 2nd Session in Calcutta (3), the 3rd Session in Madras (2), and the 4th Session in Allahabad (1).

Option 2: A-1, B-3, C-2, D-4

This option suggests that the 1st Session occurred in Allahabad (1), the 2nd Session in Calcutta (3), the 3rd Session in Madras (2), and the 4th Session in Bombay (4).

Option 3: A-4, B-2, C-3, D-1

According to this option, the 1st Session happened in Bombay (4), the 2nd Session in Madras (2), the 3rd Session in Calcutta (3), and the 4th Session in Allahabad (1).

Option 4: A-1