The correct answer is: D. Muhammad Shah Tughlaq
Muhammad Shah Tughlaq was the last ruler of the Tughlaq dynasty. He ascended to the throne in 1375 AD and ruled until his death in 1394 AD. During his reign, the Tughlaq dynasty reached its zenith. However, his reign was also marked by a number of military defeats and economic problems.
Ghiyasuddin Tughlaq was the founder of the Tughlaq dynasty. He ascended to the throne in 1320 AD and ruled until his death in 1325 AD. During his reign, he conquered a large part of northern India and established the Tughlaq dynasty as a major power in the region.
Firuz Shah Tughlaq was the third ruler of the Tughlaq dynasty. He ascended to the throne in 1351 AD and ruled until his death in 1388 AD. During his reign, he was a successful military commander and expanded the Tughlaq empire. He was also a patron of the arts and literature.
Nasiruddin Mahmud was the fourth and last ruler of the Tughlaq dynasty. He ascended to the throne in 1394 AD and was overthrown in 1398 AD. During his short reign, he was unable to cope with the challenges facing the Tughlaq empire and it collapsed soon after his death.