Converted Indian Muslim became Head of Delhi Sultanate
Answer: 1. Nasiruddin Khusrau Shah is the right answer.
Explanation: Alauddin Khilji was trying to defeat Gujarat so he attacked on Somnath Temple. Here he fought with Hindu king and Vegado Bhil (friend of Khusrau Khan). Khusrau Khan was then arrested by Alauddin Khilji and converted to Islam.
Khusrau Khan became leader of Alauddin’s army and successfully empower himself. Khusrau Khan then killed emperor Alauddin and became first and only converted Indian Muslim sultan of Delhi under the name “Nasiruddin Khusrau Shah“.