The correct option is C 3.65%
The Census provides necessary information about the country like population, literacy rate, etc.
In terms of population, the growth in the 2011 census was 15.61% and in 2001 census, it was 11.96%. Hence, the cumulative growth rose by 3.65%. This signifies the increase of at least 3 people for every 100 people in 2011, compared to 2001.