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Question:

Which of the following statements offers a supporting argument for the passage’s claim that many coastal islands are eroding?

A Louisiana has lost 2,000 square miles of coastal land.
Explaination

The loss of coastal wetlands in Louisiana is an example of coastal island erosion caused by hurricanes, and so supports the statement. The other Choices are also statements that appear in the passage, but they do not provide direct support for the claim that many coastal islands are eroding.