A voice changes from high to low pitch in speaking by
A) changing the volume of air that flows across the vocal cords.
B) controlling the growth of the tissue.
C) increasing the amplitude of the vocal cord vibrations.
D) changing the tension on the vocal cords.
E) changing the tension on the epiglottis.

Question

Quizplus · Accepted Answer

The pitch of the voice is controlled by the tension on the vocal cords. When the tension is increased, the vocal cords vibrate faster and the pitch of the voice becomes higher. When the tension is decreased, the vocal cords vibrate slower and the pitch of the voice becomes lower. So, option D is the correct answer. The other options are not relevant to the change in pitch of the voice.

A Voice Changes from High to Low Pitch in Speaking