The correct answer is: B) Hyderabad.
Hyderabad is the capital of Telangana and the sixth most populous city in India. It is located on the Deccan Plateau in the central part of the state. The city has a population of over 6.8 million people and is a major center for business, education, and technology.
Warangal is the second most populous city in Telangana. It is located in the northern part of the state and has a population of over 3.1 million people. The city is a major center for agriculture and industry.
Karimnagar is the third most populous city in Telangana. It is located in the central part of the state and has a population of over 1.6 million people. The city is a major center for agriculture and education.
Nizamabad is the fourth most populous city in Telangana. It is located in the northern part of the state and has a population of over 1.1 million people. The city is a major center for agriculture and industry.
Hyderabad is the most populous city in Telangana because it is the state capital and a major center for business, education, and technology. The city has a long history and is home to many historical and cultural attractions.