Indian state having the highest population density is
(a) Kerala
(b) West Bengal
(c) Maharashtra
(d) Punjab

Hint: Population density is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density.

Complete answer:
West Bengal is having the highest population density. The population of West Bengal state is 91,276,115. The density of West Bengal state is 903 and persons per square km is 1,029.
In simple terms, population density refers to the number of people living in an area per square kilometre. The complete count of individuals in an area is called a census. The density of population can be studied in several ways. The abundance of a population within its niche is called economic or niche density.
If it is decreasing then obviously the number of individuals in the population who are dying per unit time, exceeds the birth rate and on the other hand, if the population density is increasing, this means that the birth rate is higher than the death rate and lastly, when both rates are equal, the population density appears to be constant for a given time.

So the correct answer is ‘West Bengal’

Note: Natality is the rate of production (birth rate) of new individuals to the unit of population per unit time. Mortality is the rate of loss of individuals ( death rate) per unit time due to the death of individuals.