Option a is the correct answer. Raziyya Sultan, was the first woman ruler of medieval India. Also known as Razia Sultana, she ruled the Delhi Sultanate from 1236 to 1240. As the daughter of Sultan Shamsuddin Iltutmish, Razia demonstrated her capabilities while administrating Delhi in her father's absence. Though her ascension faced challenges, she effectively wielded power, appointing non-Turkic officers. Her reign ended in 1240 after being deposed by nobles. Important Tips Razia Sultana (1236 - 1240): Raziya claimed the throne of Delhi by deposing her half-brother Ruknuddin Feroz. She became the first Muslim woman ruler in Indian history. She appointed Yakut, an African (Abyssinian) slave, to oversee the cavalry. Her rule led to friction with the Chahalgani, a group of 40 nobles. She married Altuniya, the governor of Bhatinda. Both Razia and Altuniya were eventually killed in a coup orchestrated by the Chahalgani. Razia defied convention by discarding female attire, adopting male clothing, participating in hunting, and leading the army, which stirred resentment among the Turkish nobles.