In an experiment, two groups of mice-one whose diet included ginkgo extract and one that had a normal diet-were taugh...

Sarah on May 18, 2019

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Shunhe on December 23 at 12:16AM

Hi @Slb,

The author suggests at the end that ginkgo reduced very high stress levels in the mice, and by doing so indirectly helped mice with their memory. (B) tells us that none of these mice had extremely high stress levels in the first place. In this way, it weakens the argument. Hope this helps!