The Great Barrier Reef is the world’s largest coral reef located in:

A. South Africa
B. Australia 
C. Italy
D. Russia

🧠 Explanation:

The Great Barrier Reef, the world’s largest coral reef, is located in Australia, known for its biodiversity. For environmental or geography students, understanding the reef highlights its ecological importance, making it a key topic for studying marine ecosystems, conservation, and tourism impacts.