Explanation:

- Option 1: Baji Rao

- Baji Rao was a prominent Maratha leader.

- He was not associated with Mysore's rule.

- Option 2: Murshid Quli Jafar Khan

- He was a Nawab of Bengal, not related to Mysore.

- Option 3: Hyder Ali

- Hyder Ali was the de facto ruler of Mysore by 1761.

- He was a military leader who rose to power, establishing his control over the region.

- Correct Answer: Hyder Ali

- Option 4: Nizam-ul-Mulk

- He was the Nizam of Hyderabad, not ruling Mysore.

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