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B
Sound box
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C
Black box
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D
Both A and B
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Solution
The correct option is D Both A and B In males, the larynx increases in size during the adolescence period because of changes due to puberty. It is also called 'Adam's apple'. From the pharynx, air enters the larynx through an opening called the glottis. Along the sides of the glottis are two folds of elastic tissue called vocal cords. These are responsible for producing sound. Hence larynx is also called the voice box or the sound box.