Answer:
A. The Coral Sea
Step-by-step explanation:
The Coral Sea is a very large sea. It is located on the western part of what is know as the Oceania region.
This sea is border by Australia on the west, the Tasman Sea on the south, New Guinea and the Solomon Sea on the north, and the island chains of Solomon Islands, Vanuatu, and New Caledonia on the east.
This sea is most famous because it contains the Great Barrier Reef in it, which is the largest coral reef in the world. It is the biggest tourist attraction in all of the region, and of the biggest tourist attractions in the whole world.
The Coral Sea is also very important economically, as it is connecting the island nation of Oceania with Australia, thus the majority of the exports and imports in the region go through it.