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MissPhiladelphia
I think the correct answer from the choices listed above is option A. The environmental threat and a natural process that helped to shape the caribbean would be hurricanes. The Carribean always experiences hurricanes. These  big storms sometimes hit land and disrupt vacations.
osagieosazeme72

Answer:

D. Volcanoes

Explanation:

There are essentially two types of islands in the Caribbean. The older group -- Aruba, Bonaire, Curaçao, Guadeloupe's Grand Terre, Antigua, Barbuda, St. Martin and Anguilla -- are largely low-lying plateaus composed of billions of shells and marine animal skeletons accumulated on the ocean floor. The younger islands which were formed by an arc of underwater volcanoes at the points of convergence between the Atlantic and Caribbean tectonic plates -- surfaced relatively recently, and include Grenada, St. Vincent, St. Lucia, Martinique, Dominica, Guadeloupe's Basse Terre, Montserrat, Saba, Statia, Nevis and St. Kitts.