The correct answer is: a) Ahmedabad.
The Gujarat State Road Transport Corporation (GSRTC) is a state-owned road transport corporation in Gujarat, India. It is headquartered in Ahmedabad. The GSRTC operates a fleet of over 10,000 buses and serves over 1,000 destinations in Gujarat and other states in India. The GSRTC is one of the largest road transport corporations in India.
Option b) Gandhinagar is the capital of Gujarat. It is a major administrative and political center of the state. Gandhinagar is home to the Gujarat Legislative Assembly, the Gujarat High Court, and the offices of the Gujarat government.
Option c) Surat is a major commercial and industrial city in Gujarat. It is the second largest city in Gujarat after Ahmedabad. Surat is known for its diamond industry and textile manufacturing.
Option d) Vadodara is a major city in Gujarat. It is the third largest city in Gujarat after Ahmedabad and Surat. Vadodara is known for its historical monuments and temples.