Question

The loudness of a person's voice depends on -

• A. The length of the vocal folds.
• B. The strength of the intrinsic laryngeal muscles.
• C. The thickness of the vestibular folds.
• D. The force with which the air rushes across the vocal folds.

Answer 1

The correct option is D

The force with which the air rushes across the vocal folds.

The vocal cords open and close rapidly, or vibrate, essentially chopping the air that enters, to produce sound. Sounds can also vary, based on the amount of air that comes out of the lungs; more the air, louder the sound.