Adult Literacy Advanced Quiz
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A manufacturer advertises a new exterior sealant as providing "ten years of protection in every climate." An independent laboratory applied the sealant to 12 identical wooden panels and exposed them for six weeks to repeated cycles of intense ultraviolet light and sprayed salt water. None of the treated panels cracked or peeled, while several untreated panels did. The laboratory report warns that its accelerated test did not reproduce freezing temperatures, variations in application technique, or long-term expansion and contraction of different building materials.
Which conclusion is best supported by the laboratory evidence?
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