The correct answer is option 3: Iltutmish. Razia Sultan was the daughter of Sultan Iltutmish. He was the third ruler of the Delhi Sultanate and ruled from 1211 to 1236. After the death of Iltutmish, there was a power struggle for the throne, and Razia Sultan emerged as the most capable candidate. She became the first woman to sit on the throne of Delhi in 1236. However, her reign was short-lived, as she faced opposition from the nobles and faced constant challenges to her authority. Despite her efforts to rule effectively and enact reforms, she was eventually overthrown and killed in 1240. Nonetheless, Razia Sultan is remembered as a pioneering figure in the history of India, as one of the few women to have ruled during this period.