Read the sentence. The Great Barrier Reef attracts thousands of visitors.

Select the sentence that is expanded with a prepositional phrase.

Afterall, the Great Barrier Reef attracts thousands of visitors.
As many people know, the Great Barrier Reef attracts thousands of visitors.
During Australia's summer, the Great Barrier Reef attracts thousands of visitors.
For one main reason, the Great Barrier Reef attracts thousands of visitors