The battle of Plassey was fought between the East India Company, force headed by Robert Clive, and the Nawab of Bengal, ____ in 1757.

Answer: (3) Siraj-Ud-Daulah

Explanation:

The Battle of Plassey was fought on 23 June 1757 between the British East India Company, led by Robert Clive, and the forces of Siraj-Ud-Daulah, the Nawab of Bengal. The conflict arose due to growing disputes over the Company's trade privileges, the fortification of Calcutta without permission, and political tensions in Bengal. 

The British secured victory by forming secret alliances with influential members of the Nawab's camp, especially Mir Jafar. This decisive victory gave the East India Company control over the vast resources of Bengal. It also marked the beginning of British political dominance in India and transformed the political and economic structure of the region.

About Other Options:

(a) Mir Qasim: Mir Qasim became the Nawab of Bengal in 1760 after an agreement with the East India Company. He succeeded Mir Jafar under the Treaty of 1760 and agreed to cede important territories and clear the Company's outstanding dues.

(d) Mir Jafar: Mir Jafar was a senior military commander under Siraj-Ud-Daulah. He entered into a secret alliance with Robert Clive before the Battle of Plassey. He was made the Nawab of Bengal after the British victory.