Why Correct: Jadunath Sarkar authored definitive multi-volume works like 'History of Aurangzib' and 'Fall of the Mughal Empire', establishing him as the foremost authority on Mughal historiography.
Distractor Analysis: Sumit Sarkar specializes in modern Indian history, particularly the Swadeshi movement and social history of colonial India. Subhobhan Chandra Sarkar is not a recognized historian of Mughal studies. S. Gopal focused on modern Indian history and wrote biographies of Jawaharlal Nehru and Radhakrishnan.
Takeaway: Jadunath Sarkar also wrote 'Shivaji and His Times' and received the Companion of the Order of the Indian Empire, though he declined a knighthood from the British government.