The correct answer is: b) 72 million.
Tamil Nadu is a state in southern India. It is the sixth-largest state by area and the second-most populous state in India, with over 72 million inhabitants. The capital of Tamil Nadu is Chennai, which is also the fourth-largest city in India.
The population of Tamil Nadu has been growing rapidly in recent years. In 1951, the population of Tamil Nadu was just over 30 million. By 2011, the population had grown to over 72 million. This growth is due to a number of factors, including high birth rates, low death rates, and migration from other parts of India.
The population of Tamil Nadu is very diverse. The majority of the population is Hindu, but there are also significant Muslim, Christian, and Sikh minorities. The official language of Tamil Nadu is Tamil, but English is also widely spoken.
The economy of Tamil Nadu is one of the most developed in India. The state is home to a number of major industries, including textiles, automobiles, and electronics. Tamil Nadu is also a major agricultural state, producing a variety of crops, including rice, sugarcane, and cotton.
Tamil Nadu is a beautiful and vibrant state with a rich history and culture. It is a popular tourist destination, known for its temples, beaches, and wildlife sanctuaries.