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In humans, the sound is produced by:

AThe tongue alone
BThe eardrum
CThe lungs alone
DThe voice box (larynx), specifically the vocal cords
Answer & Solution
Correct answer: D. The voice box (larynx), specifically the vocal cords
The voice box, or larynx, sits at the top of the windpipe. Two vocal cords are stretched across it with a narrow slit between them. When lungs push air through this slit, the cords vibrate and produce sound.
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