In the Delhi Sultanate, an administrative unit called "Paragana" was headed by an official known as the "Shiqdar." The Paragana was a territorial division that served as a revenue unit and was responsible for collecting taxes from the villages within its jurisdiction. The Shiqdar, as the head of the Paragana, was responsible for overseeing the administration, law and order, and revenue collection within the Paragana.

Option 2, "Band," is not the correct answer. A Band was an official responsible for maintaining the security and defense of a specific area.

Option 3, "Ariz," is also not the correct answer. An Ariz was a military officer responsible for leading an army or a group of soldiers.

Option 4, "Amil," is not the correct answer. An Amil was an official responsible for the collection and management of revenue in a particular area.

Therefore, the correct answer is option 1, "Shiqdar," as they were the officials in charge of the Paragana administrative unit in the Delhi Sultanate.