One of the main reasons for the defeat of Nawab Siraj-ud-daulah in the Battle of Plassey was that the forces led by ______, one of his commanders, never fought the battle.

Mir Jafar

The correct answer is Option 3- Mir Jafar

One of the main reasons for the defeat of Nawab Siraj-ud-daulah in the Battle of Plassey was that the forces led by Mir Jafar, one of his commanders, never fought the battle.

Mir Jafar had secretly conspired with the British East India Company to overthrow Siraj-ud-daulah and become the new Nawab of Bengal. On the day of the battle, Mir Jafar kept his forces back and did not participate in the fighting. This allowed the British to defeat Siraj-ud-daulah's forces and take control of Bengal.