The correct answer is: A. Alam Shah
Alam Shah was the last ruler of the Tughlaq dynasty. He ascended the throne in 1394 after the death of his father, Firuz Shah Tuglaq. Alam Shah was a weak and incompetent ruler, and his reign was marked by chaos and instability. He was overthrown and killed in 1398 by Timur, the Timurid ruler of Central Asia.
Nasir Uddin Mahmood was the second ruler of the Tughlaq dynasty. He ascended the throne in 1325 after the death of his father, Ghiyasuddin Tughluq. Nasir Uddin Mahmood was a capable ruler, and his reign was marked by peace and prosperity. He died in 1351.
Firoz Shah Tuglaq was the third ruler of the Tughlaq dynasty. He ascended the throne in 1351 after the death of his father, Nasir Uddin Mahmood. Firoz Shah Tuglaq was a powerful and ambitious ruler, and his reign was marked by expansion and conquest. He died in 1388.
Mahmood Shah was the fourth ruler of the Tughlaq dynasty. He ascended the throne in 1388 after the death of his father, Firoz Shah Tuglaq. Mahmood Shah was a weak and incompetent ruler, and his reign was marked by chaos and instability. He was overthrown and killed in 1394 by his son, Alam Shah.