Which of the following statements is true regarding the relationship between vocal fold mass and vibration?

The assertion that a decrease in vocal fold mass leads to increased vibrations is grounded in the principles of how vibratory frequencies are determined. When the mass of the vocal folds is reduced, they become lighter and can respond more readily to airflow from the lungs. This increased agility allows the vocal folds to vibrate at a higher frequency, producing a higher pitch sound.

The relationship between mass and vibration frequency can be understood through the concept of mass and stiffness. In general, a lighter or less massive object tends to vibrate faster, assuming all other factors remain constant. Therefore, when the mass of the vocal folds decreases, the resulting increase in vibrational frequency aligns with this fundamental physical principle, leading to a higher pitch in voice production.

This principle illustrates how modifications in the physical properties of the vocal folds can directly affect voice characteristics, demonstrating the nuanced relationship between anatomy and the physiology of speech.