Inactive Tutor answered • 07/23/19
Answer Choice B is the correct answer because Lines 15-17 say, “A change in ocean circulation is generally thought to have brought about the onset of the millenium-long cooling, which is known as the Younger Dryas.” These Lines tell us about one of the “leading hypotheses [that] explain each of these three events” mentioned in Lines 13-14, and most clearly tell us that “the impact hypothesis is not the only possible explanation for the sudden change in Earth’s climate.” Answer Choice A is incorrect because it only explains the logic behind those who believe in the impact hypothesis. Answer Choice C is incorrect because it only explains how new evidence supports the impact hypothesis, but doesn’t suggest the existence of other possible explanatory theories. Answer Choice D is incorrect because it only continues the explanation of how new evidence supports the impact hypothesis, and doesn’t suggest the existence of any other possible explanatory hypotheses.
