<span>Micronesia the answer is b
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<span>according to a geography site "ocean trenches and ridges. Trench: very deep, elongated cavity bordering a continent or an island arc; it forms when one tectonic plate slides beneath another. Ridge: underwater mountain range that criss-crosses the oceans and is formed by rising magma in a zone where two plates are moving apart."
Hope this helps
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Argentina, Mexico, Colombia, Uruguay, Paraguay, Costa Rica, Chile, Venezuela, etc.