option d is the correct answer. The Slave dynasty, also known as the Mamluk dynasty, consisted of rulers who were originally slaves but rose to power in Delhi. The Slave dynasty ruled the Delhi Sultanate from 1206 to 1290. Balban, Iltutmish, and Qutbuddin Aybak were rulers from the Slave dynasty. Ibrahim Lodi was the first ruler of the Lodi dynasty, which ruled from 1451 to 1526. Important Tips Ibrahim Lodi (1517 - 1526): Concept of Dual Monarchy, suppressed by Sikandar Lodi, revived by Ibrahim Lodi. Ruled with cruelty, facing rebellions and secret enemies due to harsh governance. Distanced himself from nobles, imprisoned and mistreated them. Balanced this harshness by implementing agricultural reforms, benefiting both state and nobles. Despite cruelty, he maintained his relations with subjects and religious figures. Faced rebellion from Rana Sangram Singh of Mewar, extending his empire and threatening Agra. Battle of Panipat (1526): Ibrahimi decided to confront Babur, but Babur strategically positioned his army. Afghans were unfamiliar with Mughal weaponry, leading to their disadvantage. Despite numerical superiority, Ibrahim's forces were defeated by Babur's tactics such as the use of firearms and cavalry charges. This battle marked the beginning of Mughal rule in India.