The commander of East India Company’s army in the Battle of Buxar was :

Robert Clive
Admiral Watson
Sir Eyre Coote
Hector Munro

The correct answer is (c) Sir Eyre Coote.

Robert Clive was the commander of the East India Company’s army in the Battle of Plassey in 1757. Admiral Watson was a British naval officer who served in the Seven Years’ War and the American Revolutionary War. Hector Munro was a British general who served in the Seven Years’ War and the Indian Rebellion of 1857.

The Battle of Buxar was fought on October 22, 1764, between the East India Company’s army and the combined forces of the Nawab of Awadh and the Mughal emperor Shah Alam II. The battle was a decisive victory for the East India Company, and it marked the beginning of the Company’s ascendancy in India.

Sir Eyre Coote was the commander of the East India Company’s army at the Battle of Buxar. He was a veteran soldier who had served in the Seven Years’ War. Coote was a skilled tactician and a determined leader. He was able to defeat the Nawab of Awadh’s army despite being outnumbered.

The Battle of Buxar was a turning point in the history of India. It marked the beginning of the end of Mughal rule in India, and it paved the way for the East India Company to become the dominant power in the subcontinent.