Correct option is A
Correct Answer:A. Ruknuddin Firozshah < Bahramshah < Alauddin Masood Shah < Naseeruddin Mahmood
The Slave Dynasty (also known as the Mamluk Dynasty) was the first ruling dynasty of the Delhi Sultanate, established by Qutb-ud-din Aibak in 1206 CE. The following is the correct chronological order of the rulers listed:
Ruknuddin Firoz Shah (1236 CE) – Son of Iltutmish; ruled for a few months.
Bahram Shah (1236–1242 CE) – Son of Iltutmish; took over after Ruknuddin.
Alauddin Masood Shah (1242–1246 CE) – Nephew of Bahram Shah.
Nasiruddin Mahmud (1246–1266 CE) – Son of Iltutmish; ruled under the regency of Ghiyasuddin Balban, who later became Sultan.
The Slave Dynasty lasted from 1206 to 1290 CE.
It was called “Slave” because its rulers were former slaves (mamluks).
Nasiruddin Mahmud was known for his piety, and real power was exercised by Balban.
Balban later became Sultan in 1266, marking the strong administrative phase of the dynasty.
The dynasty laid the foundation of Turkish rule in India.