Voice box or larynx of human process

Options

A. Sound
B. Wind
C. Loudness
D. None

Answer

### Step-by-Step Solution:

1. **Identify the Organ**: The organ responsible for sound production in humans is the larynx, commonly known as the voice box.

2. **Structure of the Larynx**: The larynx contains two thin structures called vocal cords (or vocal folds). These cords are crucial for sound production.

3. **Mechanism of Sound Production**:
- When we breathe out, air from the lungs passes through the trachea and enters the larynx.
- The air then flows between the vocal cords.
- As the air passes through, it causes the vocal cords to vibrate.

4. **Vibration and Sound**: The vibration of the vocal cords produces sound waves. The pitch and volume of the sound can be altered by changing the tension and length of the vocal cords.

5. **Conclusion**: The larynx, or voice box, plays a vital role in the process of sound production in humans by utilizing the vibration of the vocal cords when air is passed through them.