Option a is the correct answer. Ghazi Malik, later known as Ghiyas-ud-din Tughluq, founded the Tughluq dynasty and ruled the Delhi Sultanate (1320-1325). He pursued a stern Mongol policy, defeating them at Amroha in 1305 and harshly treating captives. His reign saw conquests like Warangal. He appointed Muhammad Shah as heir and initiated Tughlaqabad Fort's construction. While focusing on justice and administration, his demise in 1325, possibly linked to a plot by his vizier, marked the end of his eventful rule. Important Tips Ghiyasuddin Tuglaq (1320 - 25): Ghiyas-ud-din Tughlaq or Ghazi Malik established the Tughluq dynasty and ruled Delhi Sultanate (1320-1325). Adopted a harsh policy towards Mongols, assassinating their envoys and punishing prisoners. Achieved victory over Mongols at Battle of Amroha in 1305. Faced revolt by Soomro tribe in Thatta during travel from Multan to Delhi. Appointed governors like Tajuddin Malik (Multan), Khwajah Khatr (Bhakkar), Malik Ali Sher (Sehwan). Sent son Fakhruddin Jauna to conquer Kakatiya capital Warangal (1323), ending Kakatiya dynasty. Named Muhammad Shah as heir, started Tughlaqabad Fort (1323). Implemented stable administration, focusing on postal, judicial, irrigation systems. Amir Khusrau famous work "Tuglaq Nama" deals with rise of Ghiyasuddin Tuglaq. Annexed Bengal, Utkala, Warangal, and imprisoned Mongol leaders. Improved finances, communication, roads, bridges, and canals. Died in 1325 due to the collapse of a wooden pavilion, possibly orchestrated by his vizier, Jauna Khan.