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. Although direct evidence of recent eruptions is lacking, scientists believe that these volcanoes were active as recently as 100 million years ago. B. Scientists estimate that volcanoes active more recently than 100 years ago will still have extensive impact cratering on their slopes. C. If, as some evidence suggests, these volcanoes erupted as recently as 100 million years ago, they may continue to be intermittently active. D. Although these volcanoes were active as recently as 100 million years ago, there is no direct evidence of recent or ongoing eruptions.