Answer:
The correct missing word is: vibrate.
Explanation:
The words he uses begin in his vocal cords which vibrate the air molecules in his throat.
The process by which the air pressure from the lungs is converted into audible vibrations is known as phonation.
When the air passes through the vocal folds, it causes them to vibrate, as phonation occurs. It is due to the vocal folds that a singer has a wide range of control over the pitch of his voice.
