Correct option is B
Uttar Pradesh had a population density of 828 persons per sq. km as per Census 2011.
Bihar had the highest population density, standing at 1102 persons per sq. km.
Kerala had a population density of 859 persons per sq. km.
West Bengal had a density of 1029 persons per sq. km.
Population density is an important demographic indicator, showing the number of people living per square kilometer of land area. States with higher densities often face challenges related to infrastructure, resources, and urbanization.