For safe listening, limit listening to a portable music player with earphones or earbuds at ____ percent of its potential volume to ____ hour(s) a day

A) ?30; three
B) ?50; two
C) ?60; one
D) ?70; two
E) ?80; three


C

Health & Biomechanics

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Indicate whether the statement is true or false

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What will be an ideal response?

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