The question asks to identify the ruler of the Surguja State when the Oraon Rebellion took place in 1918.
Historical records indicate that during the period of the Oraon Rebellion in 1918, the ruler of the Surguja State was Ramanuj Sharan.
Therefore, Ramanuj Sharan was the head of the Surguja State during this significant tribal uprising.
Consider the following personalities with respect to Praja Mandal Movement.
(I) Sarangadhar Das
(II) Pabitra Mohan Pradhan
(III) Rajendra Narayan Bhanja Deo
(IV) Harekrushna Mahatab
How many of then was/were NOT associated with the movement.