The correct answer is A. 7.9.
The birth rate of Bihar in 2002 was 7.9 per 1000. This means that for every 1000 people in Bihar, 7.9 babies were born that year. This is a relatively low birth rate, and is below the national average of 22.2 per 1000.
There are a number of factors that could contribute to the low birth rate in Bihar. One possibility is that the state has a high rate of female education and employment. Women who are educated and employed are more likely to delay having children, or to have fewer children overall. Another possibility is that the state has a high rate of poverty. Poverty can lead to poor health outcomes, which can in turn lead to lower fertility rates.
Whatever the reasons, the low birth rate in Bihar is a cause for concern. A low birth rate can lead to a number of problems, including an aging population, a shrinking workforce, and a decline in economic growth. The state government will need to take steps to address the issue of low birth rate, in order to ensure the long-term health and prosperity of the state.
Option B, 30.9, is incorrect. The birth rate of Bihar in 2002 was 7.9 per 1000, not 30.9 per 1000.
Option C, 20.9, is incorrect. The birth rate of Bihar in 2002 was 7.9 per 1000, not 20.9 per 1000.
Option D, 26.6, is incorrect. The birth rate of Bihar in 2002 was 7.9 per 1000, not 26.6 per 1000.