SAT #9 (QAS April 2017) Reading Question 43

An analysis and breakdown for Question 43 from the Reading Section for the SAT #9 (April 2017 QAS). Here's a written explanation for the question:

"Answer Choice A is the correct answer because Paragraphs 4-8 primarily describe how scientists Martone and Estevez discovered the presence of lignin in a red alga, and Lines 13-16 say, “The finding suggests that a biological building block fundamental to the success of land plants has roots that stretch back far deeper — and maybe wider — through evolutionary time than was known.” Together, these tell us that the Passage primarily concerns the discovery of lignin and some possible consequences of that discovery. This most closely matches Answer Choice A, which says that the Passage is primarily concerned with “narrating how a finding was arrived at and indicating possible implications.” Answer Choice B is incorrect because the Passage doesn’t look at different scientific specialists and compare them, like, for instance, noting the difference between a [...] and a biomechanist. Answer Choice C is incorrect because the phenomenon of the presence of lignin isn’t characterized as troubling or “vexing,” and the Passage keeps things open-ended without “endorsing a single explanation.” Answer Choice D is incorrect because, while the Passage does describe some properties of an organism, it doesn’t try to show how they can be exploited."

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