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Text Structure and Purpose SAT question
Reading and Writing · Craft and Structure · Easy · Answer it here, explanation included.
Genetic studies have led researchers to suggest that turtles are most closely related to the group that includes modern crocodiles. But studies of fossils have suggested instead that turtles are most closely related to other groups, such as the one that contains modern snakes. However, many of the fossil studies have relied on incomplete data sets. For a 2022 investigation, biologist Tiago R. Simões and colleagues examined more than 1,000 reptile fossils collected worldwide. From this large data set, they found clear agreement with the results of the genetic studies.
Which choice best describes the function of the underlined sentence?
ExplanationShow
Choice B is the best answer. The sentence mentions that some fossil studies have relied on incomplete data sets, suggesting that these studies are limited in what they can tell us about turtles’ origins.
Choice A is incorrect. While the sentence mentions the incompleteness of the data sets studied, it doesn’t mention any tools or techniques used to examine fossils. Choice C is incorrect. The sentence doesn’t mention anything about the evolution of crocodiles. Choice D is incorrect. This sentence doesn’t directly mention or criticize any "widely held belief," and it focuses on a limitation of fossil studies of reptiles, not genetic studies.
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