The best and most correct answer among the choices provided by the question is the last choice, D. Lesser Antilles.
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Initially, people's believe about the ocean floor was that it is mostly flat, and that it has little to no distinguishing features. This was proven wrong when sonar was used to map the ocean floor by <span>German scientists in the early </span>20th century, and they observed that the ocean floor is varied and it showcases such distinguishing features as atolls, submarine canyons, and mid-ocean ridges.
An extrusive igneous rock is created when lava hardens.