Answer & ExplanationAnswer: [B]
The correct answer is Jaunpur.
Bahlul Lodi, the Sultan of Delhi, annexed the kingdom of Jaunpur in AD 1484. Jaunpur was a powerful kingdom in northern India during that time, and its annexation by Bahlul Lodi added to the territories of the Delhi Sultanate.
Therefore, the correct answer is option B. Jaunpur.