In the Delhi Sultanate an administrative unit called Pargana was headed by

Answer: Option D

Parganas, also spelt pergunnah during the time of the Sultanate period, Mughal times and British Raj, is a former administrative unit of the Indian subcontinent, used primarily, but not exclusively, by the Muslim kingdoms. Parganas were introduced by the Delhi Sultanate, and the word is of Persian origin. As a revenue unit, a pargana consists of several mouzas, which are the smallest revenue units, consisting of one or more villages and the surrounding countryside. Subdivisions of parganas were called Mouzas (area, settlements). Under the reign of Sher Shah Suri, administration of parganas was strengthened by the addition of other officers, including a shiqdar (police chief), an amin or munsif (an arbitrator who assessed and collected revenue) and a karkun (record keeper).