The correct answer is A) Indore.
Indore is the most populous city in Madhya Pradesh, with a population of over 3.5 million people. It is also the second most populous city in central India, after Jaipur. Indore is located in the Malwa region of Madhya Pradesh, and is the administrative headquarters of Indore district. The city is a major commercial and industrial center, and is home to a number of educational institutions, including the University of Indore.
Jabalpur is the second most populous city in Madhya Pradesh, with a population of over 1.7 million people. It is located in the central part of the state, on the banks of the Narmada River. Jabalpur is a major industrial and educational center, and is home to a number of universities, including the Indian Institute of Technology Indore.
Bhopal is the capital of Madhya Pradesh, and the third most populous city in the state, with a population of over 1.1 million people. It is located in the central part of the state, on the banks of the Betwa River. Bhopal is a major administrative, commercial, and educational center, and is home to a number of universities, including the Indian Institute of Technology Bhopal.
Gwalior is the fourth most populous city in Madhya Pradesh, with a population of over 1.0 million people. It is located in the north-central part of the state, on the banks of the Chambal River. Gwalior is a major historical and cultural center, and is home to a number of forts and palaces.
In terms of population density, Indore has the highest population density of any district in Madhya Pradesh, with a population density of over 2,000 people per square kilometer. Jabalpur has a population density of over 1,000 people per square kilometer, Bhopal has a population density of over 800 people per square kilometer, and Gwalior has a population density of over 600 people per square kilometer.