The correct answer is: a) Visakhapatnam.
Visakhapatnam is the most populous city in Andhra Pradesh, India. It is the third-largest city in the state after Hyderabad and Vijayawada. The city is located on the Bay of Bengal and is a major port city. It is also a major industrial and commercial center.
Vijayawada is the second-largest city in Andhra Pradesh. It is the capital of the state. The city is located on the Krishna River. It is a major cultural and educational center.
Tirupati is a city in Andhra Pradesh. It is a major Hindu pilgrimage center. The city is home to the Tirumala Venkateswara Temple, one of the most popular temples in India.
Guntur is a city in Andhra Pradesh. It is the third-largest city in the state after Hyderabad and Vijayawada. The city is located on the Krishna River. It is a major agricultural and industrial center.
Visakhapatnam is the most populous city in Andhra Pradesh because it is a major port city, industrial and commercial center. It is also a major cultural and educational center.