Explanation: Ala-ud-din nominated his eldest son Khizr Khan, as his successor. However, Ala-ud-din’s confidant at that time was Malik Kafur.

• So Malik Kafur himself assumed the authority of the government. But Kafur’s rule lasted only thirty-five days as he was assassinated by hostile nobles.
• Thereafter there were a series of murders which culminated in Ghazi Malik, a veteran of several campaigns against the Mongols, ascending the throne of Delhi in 1320 as Ghiyas-ud-din Tughlaq.

Source: NCERT