APSRTC operates a vast network of buses connecting:

Urban centers within Andhra Pradesh only
Rural and urban areas within Andhra Pradesh
Andhra Pradesh with neighboring states
All of the above

The correct answer is: d) All of the above.

APSRTC operates a vast network of buses connecting urban centers within Andhra Pradesh, rural and urban areas within Andhra Pradesh, and Andhra Pradesh with neighboring states. It is the largest state-owned road transport corporation in India, with a fleet of over 10,000 buses. APSRTC operates over 10,000 services daily, covering over 100,000 kilometers of road. The corporation has its headquarters in Hyderabad, and has offices in all 13 districts of Andhra Pradesh. APSRTC offers a variety of bus services, including express services, deluxe services, and ordinary services. The corporation also operates a number of special services, such as tourist buses and pilgrim buses. APSRTC is a major employer in Andhra Pradesh, with over 50,000 employees. The corporation is a vital part of the state’s transportation infrastructure, and plays a key role in the economic development of Andhra Pradesh.

Option a) is incorrect because APSRTC operates buses to rural areas as well.

Option b) is incorrect because APSRTC operates buses to neighboring states as well.

Option c) is incorrect because APSRTC operates buses to urban centers as well.