As per Census 2011, the population density of Bihar is

223
153
1106
123

The correct answer is C. 1106.

Bihar is the third most populous state in India, with a population of 103,804,637 as of 2011. It has a population density of 1,106 people per square kilometer, which is the highest in India. The state’s population is growing at a rate of 2.4% per year.

The population density of Bihar is high due to a number of factors, including its large size, its fertile land, and its relatively low level of urbanization. The state’s population is concentrated in its rural areas, where the population density is much higher than in its urban areas.

The high population density of Bihar has a number of implications for the state’s development. It puts a strain on the state’s resources, such as its land, water, and infrastructure. It also contributes to the state’s high levels of poverty and unemployment.

The state government is taking a number of steps to address the challenges posed by the high population density of Bihar. These include investing in infrastructure, such as roads, bridges, and power plants; promoting urbanization; and providing education and employment opportunities for its people.