Correct Answer: Dabir-i-Khas

Solution : The correct answer is Dabir-i-Khas.

During the Delhi Sultanate, the "Dabir-i-Khas" or "Amir-Munshi" was indeed the head of the Diwan-i-Insha department. This department was responsible for managing official correspondence, including communication between the Sultan, and foreign rulers, subordinate chiefs, and officials. The Amir-Munshi oversaw this crucial role and had a team of dabirs (authors) to assist in managing the extensive correspondence and record-keeping tasks.