The correct answer is Saran.
As per Census 2011, the literacy rate in Saran district is 73.98%, which is the highest among all the districts of Bihar. The literacy rate in Purnea district is 68.78%, the literacy rate in Banka district is 67.86%, and the literacy rate in Rohtas district is 67.32%.
The literacy rate in Saran district is higher than the national average of 74.04%. This is due to a number of factors, including the presence of a number of educational institutions in the district, the government’s focus on education, and the people’s awareness of the importance of education.
The high literacy rate in Saran district has a number of benefits. It has led to an increase in the number of people who are employed in white-collar jobs. It has also led to an increase in the number of people who are involved in business and entrepreneurship. The high literacy rate has also led to an increase in the standard of living of the people in the district.
The high literacy rate in Saran district is a positive development. It is a sign of progress and development. It is also a sign of the people’s commitment to education.