Explanation: Tamil Nadu is one of the 28 states of India, located in the southern part of the country. It is bordered by the states of Karnataka to the west, Andhra Pradesh to the north, and Kerala to the west. The state is known for its rich cultural heritage, including classical music, dance, and literature. Tamil Nadu is also a significant economic and industrial hub in India, with a diverse range of industries and a strong service sector.
Chennai, the capital city of Tamil Nadu, is the largest city in the state and is often referred to as the "Detroit of India" due to its automobile industry. It is a major commercial and cultural center, with a rich history dating back to the early 17th century. The city is known for its beaches, temples, and vibrant cultural scene.
Salem is another important city in Tamil Nadu, located in the northern part of the state. It is a major industrial center, particularly known for its textile and engineering industries. Salem is also a significant educational hub, with several colleges and universities.
Vellore, located in the northern part of Tamil Nadu, is known for its historical significance and educational institutions. The city is home to the Vellore Fort, a 16th-century fort that played a crucial role in the history of the region. Vellore is also a major educational center, with several renowned engineering and medical colleges.
The cities of Chennai, Salem, and Vellore are all located within the state of Tamil Nadu, making option A the correct answer. The other options, Madhya Pradesh, Uttar Pradesh, and West Bengal, are states located in different parts of India and do not include these cities. Understanding the geographical distribution of cities within states is essential for comprehending the administrative and cultural landscape of India.