Explanation:

- Bihar is known for having the highest fertility rate among Indian states, especially as per the 2011 census. This means women in Bihar tend to have more children on average.

- Kerala has one of the lowest fertility rates in India. The state's emphasis on education and health contributes to family planning practices.

- Punjab also has a relatively low fertility rate compared to states like Bihar. Economic factors and urbanization play a role here.

- Maharashtra sees a moderate fertility rate, with urban areas contributing to lower birth rates.

Option 4: Bihar is the correct answer as it recorded the highest fertility rate according to the 2011 census.