Explanation:

- In January 2021, a state in India decided to rename the dragon fruit as ‘Kamalam.’

- This decision was part of an effort to give a local touch to the fruit's name.

- Option 1: Rajasthan - Known for its deserts and palaces. Not associated with this renaming effort.

- Option 2: Uttar Pradesh - A state in northern India. Did not rename dragon fruit.

- Option 3: Tamil Nadu - Located in the southern part of India. Not the state that renamed the fruit.

- Option 4: Gujarat - The correct state which renamed the dragon fruit to ‘Kamalam.’

- The name was inspired by the fruit's shape, which resembles a lotus, a symbol associated with the state.