Your voice lowers in pitch when _____.
your throat muscles stretch your vocal cords
your throat muscles relax your vocal cords
your lungs push air across your vocal cords
the vocal cords inside your larynx vibrate
The correct answer is: the vocal cords inside your larynx vibrate.
When you speak, the vocal cords vibrate, producing sound waves. The pitch of your voice is determined by the frequency of these vibrations. A lower pitch indicates slower vibrations, while a higher pitch indicates faster vibrations.