Correct Answer: A person aged seven years and above who can read and write with understanding in any language is treated as literate.

Solution : The correct statement is A person aged seven years and above who can read and write with understanding in any language is treated as literate .

In the 2011 population census, literacy criteria considered the ability to read and write with comprehension as the benchmark for determining literacy status. The literacy rate in 2011 was 74.04%, not 78%. The sex ratio is the number of females per 1000 males in the total population. Kerala's sex ratio in the 2011 census was 1084, meaning there were 1084 females for every 1000 males in the state.