The Great Barrier Reef is ________
A
Conglomeration of corals in Australian waters
B
Mountains range in Utah, U.S.A.
C
Salt hills of Afghanistan
D
Sub-Oceanic mountain in South China Sea
Correct Answer: Conglomeration of corals in Australian waters
The Great Barrier Reef is Conglomeration of corals in Australian waters. It is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres (1,400 mi) over an area of approximately 344,400 square kilometres (133,000 sq mi). The reef is located in the Coral Sea, off the coast of Queensland, Australia.