Correct option is B
The Battle of Karnal was fought on 24 February 1739 between Nadir Shah, the ruler of Persia (Iran), and Muhammad Shah, the Mughal Emperor of India.
The battle took place near Karnal (in present-day Haryana).
Nadir Shah decisively defeated the Mughal army, which led to the plunder of Delhi and the infamous massacre.
He took immense wealth, including the Peacock Throne and Koh-i-Noor diamond.
The Mughal army, despite being numerically superior, was poorly led and suffered from disunity.
This defeat marked the beginning of the end of the Mughal Empire's power.
The battle exposed the weakness and decline of the Mughal military and administration.
Option A: Lord Wellesley
He was a British Governor-General, active in the early 19th century, unrelated to this battle.
Option C: Sadashiv Rao Bhau
He was a Maratha commander in the Third Battle of Panipat (1761) against Ahmad Shah Abdali.
Option D: Siraj-ud-Daula
The Nawab of Bengal, defeated in the Battle of Plassey (1757) by the British East India Company.