StrengthenDiff: Easy

Logic Breakdown

Passage Summary: Gilbert says the cookies aren't natural because their acids are lab-made. Sabina argues they are natural because those same acids exist in sugarcane.

Conclusion: The label claiming the cookies contain only natural ingredients is correct.

Reasoning: The alphahydroxy acids found in the cookies also occur naturally in sugarcane, even though the specific ones in the cookies were synthesized in a lab.

Analysis: Sabina's argument relies on a specific definition of 'natural'—one that focuses on the chemical identity of a substance rather than its origin. To strengthen this, we need to bridge the gap between a lab-synthesized chemical and its naturally occurring counterpart. Look for an answer that suggests a substance is considered natural as long as it exists in nature, regardless of how it was actually produced. This would validate Sabina's leap from 'found in sugarcane' to 'the label is not mistaken.'

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5.

Which one of the following, if true, would most strengthen Sabina's argument?

Correct Answer
E
E gives the needed definition: all substances except those that do not occur naturally anywhere are considered natural. Since AHAs occur in sugarcane, they count as natural under this rule, directly supporting Sabina’s claim that the label is not mistaken.
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