The correct answer is: a) Visakhapatnam.
Visakhapatnam is a port city and industrial center in the Indian state of Andhra Pradesh. It is located on the Bay of Bengal, about 600 kilometers (370 mi) north of Chennai. Visakhapatnam is the third-largest city in Andhra Pradesh, after Hyderabad and Vijayawada.
Visakhapatnam is known for its petrochemical and refinery industries. The city is home to the Visakhapatnam Refinery, which is one of the largest refineries in India. The refinery is operated by Hindustan Petroleum Corporation Limited.
Visakhapatnam is also home to a number of other industries, including steel, cement, and pharmaceuticals. The city is a major port and is connected to other parts of India by road, rail, and air.
The other options are incorrect because:
- Tirupati is a holy city and pilgrimage destination. It is home to the Tirumala Venkateswara Temple, one of the most popular temples in India.
- Vijayawada is the capital of Andhra Pradesh. It is a major commercial and educational center.
- Guntur is a city in Andhra Pradesh. It is known for its agriculture and education.