Explanation:

- Option 1: Madhya Pradesh

- Known for its rich history and cultural heritage.

- It is the second-largest state in India by area.

- Not the most populous state as of the 2011 Census.

- Option 2: Kerala

- Known for its scenic landscapes and high literacy rate.

- Smaller in area and population compared to Uttar Pradesh.

- Not the most populous state as of the 2011 Census.

- Option 3: Uttar Pradesh

- ?? Green tick the answer.

- The most populous state according to the 2011 Census.

- Known for its political influence and historical landmarks.

- Option 4: Rajasthan

- Largest state by area in India.

- Known for its deserts and palaces.

- Not the most populous state as of the 2011 Census.