Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information A. Volcanic activity is responsible for the formation of the Pacific seafloor in the interior of the Pacific Plate. B. Many volcanoes in the Pacific Ocean are no longer active and have become islands that support coral. C. There are many islands in the Pacific Ocean that originated as volcanoes in the interior of the Pacific Plate. D. The map of the Pacific Ocean reveals fewer volcanic islands than there truly are because many are no longer active and some are completely overgrown with coral.