The correct answer is A. Old Goa.
Old Goa is a former capital of Portuguese India, located in the Indian state of Goa. It is located on the banks of the Mandovi River, about 10 kilometers from the state capital Panaji. The city was founded in 1510 by Afonso de Albuquerque, and served as the capital of Portuguese India until 1759.
The Se Cathedral is a Roman Catholic cathedral located in Old Goa. It is the seat of the Archbishop of Goa and Daman. The cathedral was built in the 16th century, and is one of the largest and most impressive churches in India. It is a UNESCO World Heritage Site.
The other options are incorrect. North Goa is a district in the Indian state of Goa. It is located in the northern part of the state, and is the most popular tourist destination in Goa. South Goa is a district in the Indian state of Goa. It is located in the southern part of the state, and is less developed than North Goa.