How does the quantity of zinc used in a mineral-based sunscreen affect an individual's chance of getting a sunburn? which statement forms the best testable hypothesis for the question?
a. if the quantity of zinc in a mineral-based sunscreen affects the total amount of uva and uvb rays absorbed, then increasing the amount of zinc will decrease an individual's chance of getting a sunburn
b. if mineral-based sunscreens are thicker and opaque when applied because they contain more zinc, then they decrease an individual's chance of getting a sunburn.
c. if spray-based sunscreens require less time to apply and dry because they include less zinc, then individuals who use spray-based sunscreens will have a reduced chance of getting a sunburn.
d. if mineral-based sunscreens contain more zinc in them, then individuals who use them will decrease their chances of getting a sunburn.
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