Explanation:

- Bhojtal, formerly known as Upper Lake, is in the state of Madhya Pradesh.

- It is located in the capital city, Bhopal.

- The lake is one of the largest man-made lakes in India.

- Bhojtal serves as a major source of drinking water for the residents of Bhopal.

- It was originally built by King Bhoj in the 11th century.

- The lake is popular for various water sports and recreational activities.

- Option 1: Odisha - Not related to Bhojtal.

- Option 2: Madhya Pradesh - Correct. Bhojtal is here.

- Option 3: Rajasthan - Incorrect for Bhojtal.

- Option 4: Uttar Pradesh - No link to Bhojtal.

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