The correct answer is A) Hyderabad.
Hyderabad is the capital of Telangana and the sixth most populous city in India. It is a major center for education, healthcare, and technology. The city is also home to a large number of pharmaceutical companies, making it a major pharmaceutical hub in India.
Warangal is the second largest city in Telangana and is known for its historical and cultural significance. The city is also home to a number of educational institutions and industries. However, it is not a major pharmaceutical hub.
Karimnagar is the third largest city in Telangana and is known for its agricultural and industrial development. The city is also home to a number of educational institutions. However, it is not a major pharmaceutical hub.
Nizamabad is the fourth largest city in Telangana and is known for its cotton production. The city is also home to a number of educational institutions and industries. However, it is not a major pharmaceutical hub.