The correct answer is: a) Krishna.
Krishna district has the highest literacy rate in Andhra Pradesh, with 83.6% of the population over the age of 7 being literate. This is followed by Guntur district with 83.4%, West Godavari district with 83.3%, and East Godavari district with 83.2%.
Srikakulam district has a literacy rate of 82.9%, Nellore district has a literacy rate of 82.8%, and Kurnool district has a literacy rate of 82.7%.
The literacy rate in Andhra Pradesh has been steadily increasing over the past few decades. In 1991, the literacy rate was 60.4%. By 2011, it had increased to 73.2%. This increase is due to a number of factors, including government initiatives to promote education, the expansion of educational facilities, and the increasing awareness of the importance of education among the population.
The high literacy rate in Andhra Pradesh has a number of benefits. It contributes to economic growth by increasing the productivity of the workforce. It also helps to reduce poverty and inequality. In addition, it promotes social development by enabling people to participate more fully in society.