The correct option is B 324 persons per sq.km
The population density is the ratio between the land area and the people living
over it. It is the number of people per unit of area, usually quoted ‘population per
square kilometer’. The records of population census 2011 of India state that the
density in 2011 has increased from a figure of 324 in 2001 to that of 382 per square
kilometer in 2011.