INDIAN HISTORY

Detailed explanation-1: -In 1555, Humayun defeated the Afghans and recovered the Mughal throne. After six months, he died in 1556 due to his fall from the staircase of his library.

Detailed explanation-2: -Hence, The correct answer is Option is B. Note: Sher Shah defeated Humayun in two battles.

Detailed explanation-3: -Humāyūn, also called Nāṣir al-Dīn Muḥammad, (born March 6, 1508, Kabul [Afghanistan]-died January 1556, Delhi [India]), second Mughal ruler of India, who was more an adventurer than a consolidator of his empire.

Detailed explanation-4: -Humayun died by falling from the steps of library. On the evening of 24th January, 1556, king Humayun was sitting on the roof of his library situated in that group of the buildings known as Din Panah and was subsequently called Sher Mandal.