The correct answer is (a) Rajasthan.
Rajasthan has the lowest population density in India, with 132 people per square kilometer. This is due to a number of factors, including the state’s large size and its arid climate. Rajasthan is the largest state in India by area, covering an area of 342,239 square kilometers. It is also one of the driest states in India, with an average annual rainfall of just 500 millimeters. This low rainfall and high temperatures make it difficult to support a large population.
Madhya Pradesh has a population density of 213 people per square kilometer. Gujarat has a population density of 266 people per square kilometer. Karnataka has a population density of 336 people per square kilometer.
All of these states have a higher population density than Rajasthan. This is due to a number of factors, including their smaller size, their more temperate climate, and their proximity to major cities.