Explanation:

- Murshid Quli Khan was the Nawab of Bengal.

- He became the first Nawab of Bengal in the early 18th century.

- He is known for establishing Bengal's autonomy under the Mughal Empire.

- Awadh (Option 1):

- Later known for its capital, Lucknow.

- Significant in the 18th and 19th centuries under different rulers like Shuja-ud-Daula.

- Lucknow (Option 2):

- Not a separate Nawabship; part of Awadh.

- Famous for its cultural and architectural contributions.

- Hyderabad (Option 4):

- Nizams were the prominent rulers here, not Murshid Quli Khan.

- Known for its wealth and rich history in southern India.

Correct Answer: Option 3 - Bengal