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What Causes a Boy's Voice to "Break" or Change at the Onset

Question 12

Multiple Choice

What causes a boy's voice to "break" or change at the onset of puberty?


A) Rapid growth of the throat region stretches the vocal cords.
B) Testosterone causes the vocal cords to thicken.
C) Testosterone closes the glottis permanently.
D) Testosterone enlarges the thyroid cartilage (Adam's apple) .

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