Which of the following Indian state has the highest density of population?

Bihar

The correct answer is Option (1) → Bihar

Bihar with a population density of 1102 persons per sq km, is the Indian state with the highest population density as per census of 2011.

West Bengal: West Bengal's population density in 2011 was around 1,029 people per square kilometer.

Kerala: Kerala had a population density of approximately 860 people per square kilometer in 2011.

Uttar Pradesh: Uttar Pradesh had a population density of about 828 people per square kilometer in 2011.