How did Sultan Qutb-ud-din Aibak die?

Qutb-ud-din Aibak, who ruled from 1206 to 1210, died suddenly in 1210 as a result of an accident while playing chaugan (polo) in Lahore; he fell from his horse and sustained fatal injuries [1]. Contemporary and later accounts likewise record that his death was due to a polo accident rather than assassination or battlefield wounds, although he did face rivalry from Taj al-Din Yildiz during his rule — a political contest unrelated to his death. Thus among the given choices, the account of death after a fall from his horse while playing chaugan (option 4) is historically supported.

Sources

1. [1] History , class XI (Tamilnadu state board 2024 ed.) > Chapter 10: Advent of Arabs and Turks > Qutb-ud-din Aibak (1206-1210) > p. 140