The correct answer is: a) Visakhapatnam.
Visakhapatnam district is one of the 30 districts in the Indian state of Andhra Pradesh. It is located in the northern part of the state, on the Bay of Bengal. The district has a population of over 4.5 million people and is the third most populous district in Andhra Pradesh. The district headquarters is the city of Visakhapatnam.
Visakhapatnam district is divided into 13 revenue divisions: Anakapalli, Bheemavaram, Chintapalle, Gajuwaka, Gopalpur, Gurudwarpeta, Kukatpally, Madugula, Pedda Waltair, Pendurthi, Visakhapatnam Urban, and Vizianagaram.
The Visakhapatnam revenue division is one of the 13 revenue divisions in Visakhapatnam district. It is located in the northern part of the district, on the Bay of Bengal. The revenue division has a population of over 2.5 million people and is the most populous revenue division in Visakhapatnam district. The revenue division headquarters is the city of Visakhapatnam.
The Visakhapatnam revenue division is divided into 6 mandals: Anakapalli, Bheemavaram, Chintapalle, Gajuwaka, Gopalpur, and Gurudwarpeta.
The other options are incorrect because they are not revenue divisions of Visakhapatnam district.