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Which of the following statements is true? Question 17 options: There is only one kind of harmful UV ray from the sun. We need vitamin D from the sun so there is no unsafe exposure level. From 10AM to 4PM are the most dangerous hours for exposure to the sun. SPF 10 is the minimum for safe protection from the sun.

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r0swell

"From 10AM to 4PM are the most dangerous hours for exposure to the sun."

The first two don't make any sense. As for SPF, the FDA minimum is 15 but the recommended minimum is 30. 10AM-4PM are the peak sunlight hours, generally (unless you live in Antarctica of course).

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