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sam_mkatz
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sam_mkatz
Saturday, Feb 01

I got the answer correct, but I was wondering if anyone else came to the conclusion that D was incorrect through a different way than as provided. For me, I read D as saying those who were vulnerable spent less time in the sun, meaning they wouldn't be a relevant party to the "experiment," to begin with. Because they are already staying out of the sun, there is no way to assess what impact sunscreen or the sun has on them. But the explanation seems to imply that they are part of the "experiment." Is this train of thought technically wrong?

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