The correct answer is A. 67.27%.
The female literacy rate in Assam is 67.27%, which is lower than the national average of 74.04%. This means that 67.27% of women in Assam are literate, while 32.73% are illiterate.
There are a number of factors that contribute to the low female literacy rate in Assam. One factor is poverty. Many families in Assam cannot afford to send their daughters to school, and girls are often expected to stay at home to help with household chores. Another factor is social customs. In some parts of Assam, girls are not encouraged to go to school, and they may be married off at a young age.
The government of Assam is working to improve the female literacy rate. The government has launched a number of programs to provide education to girls, and it has also made it illegal to marry girls under the age of 18. These programs are having a positive impact, and the female literacy rate in Assam is slowly increasing.
Option B is incorrect because the female literacy rate in Assam is not 64.74%. Option C is incorrect because the female literacy rate in Assam is not 74.75%. Option D is incorrect because the female literacy rate in Assam is not none of these.