The largest coral reef in the world is found near the coast of which one of the following countries?

The correct answer is A) Australia. Explanation: A) Australia: The Great Barrier Reef, located off the coast of Queensland, Australia, is the world's largest coral reef system. It is the largest living structure on Earth and is easily visible from space. This makes Australia the correct answer. B) Cuba: Cuba has significant coral reef systems, such as those in Jardines de la Reina, which are well-preserved and biodiverse. However, they are not the largest in the world. C) Indonesia: Indonesia is part of the Coral Triangle, an area known for its exceptionally high marine biodiversity and extensive coral reefs. While Indonesia has numerous important reefs, no single reef system there surpasses the Great Barrier Reef in size. D) Philippines: The Philippines is also within the Coral Triangle and boasts rich coral reef ecosystems. Like Indonesia, it has important reefs, but none are larger than the Great Barrier Reef.