The correct option is An administrative subdivision of a sarkar.
Explanation
The Mughal Empire maintained a centralized administrative structure divided into specific territorial units to facilitate governance and revenue collection. The hierarchy descended from the provincial level down to the village level.
Detailed Analysis:
- An administrative subdivision of a sarkar is Correct: The Pargana was an administrative subdivision of a Sarkar (district). It functioned as a sub-district or tehsil, comprising a group of villages. The Pargana was the primary unit for revenue administration where officials like the Shikdar (executive officer), Amil (revenue collector), and Qanungo (revenue record keeper) operated.
- A military fort is Incorrect: A military fort was generally referred to as a Qila. While forts were strategic components of Mughal rule, the term Pargana refers strictly to a territorial administrative unit.
- A tax on trade is Incorrect: Taxes on trade and transit duties were known by terms such as Rahdari or Tamgha. Pargana is a geographical and administrative division, not a fiscal levy.
- A forest tract is Incorrect: Forest tracts were not specifically designated as Parganas. While a Pargana might contain forest land, the term itself denotes the administrative jurisdiction encompassing villages and lands within a Sarkar.
Key Takeaway:
The descending order of Mughal administrative divisions was: Subah (Province) → Sarkar (District) → Pargana (Sub-district/Mahal) → Mauza/Deh (Village).