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Cross-Text Connections SAT question
Reading and Writing · Craft and Structure · Hard · Answer it here, explanation included.
Text 1
Growth in the use of novel nanohybrids—materials created from the conjugation of multiple distinct nanomaterials, such as iron oxide and gold nanomaterials conjugated for use in magnetic imaging—has outpaced studies of nanohybrids’ environmental risks. Unfortunately, risk evaluations based on nanohybrids’ constituents are not reliable: conjugation may alter constituents’ physiochemical properties such that innocuous nanomaterials form a nanohybrid that is anything but.
Text 2
The potential for enhanced toxicity of nanohybrids relative to the toxicity of constituent nanomaterials has drawn deserved attention, but the effects of nanomaterial conjugation vary by case. For instance, it was recently shown that a nanohybrid of silicon dioxide and zinc oxide preserved the desired optical transparency of zinc oxide nanoparticles while mitigating the nanoparticles’ potential to damage DNA.
Based on the texts, how would the author of Text 2 most likely respond to the assertion in the underlined portion of Text 1?
ExplanationShow
Choice D is the best answer. The author of Text 2 acknowledges that nanohybrids may be more toxic than their constituent parts, but also provides an example of a nanohybrid that has reduced toxicity compared to its components: silicon dioxide and zinc oxide together have all the benefits of zinc oxide nanoparticles without any of the DNA harm zinc oxide has on its own.
Choice A is incorrect. While the author of Text 2 gives an example of a nanohybrid that isn’t as toxic as its constituent parts, they don’t argue that the benefit outweighs the risk. They merely argue that “the effects of nanomaterial conjugation vary by case.” Choice B is incorrect. The author of Text 2 states that the effects of nanomaterial conjugation “vary by case,” and that the attention that their potential toxicity has drawn is warranted. If the situation in Text 1 weren’t representative, then there would be less attention to the potential danger of these materials. Furthermore, neither passage suggests that researchers had expected that they could predict the effects of nanomaterial conjugation. Choice C is incorrect. The author of Text 2 agrees that the potential toxicity of nanohybrids “has drawn deserved attention,” so they aren’t denying the problem.
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