The sound in human is produced by

Options

A. heart
B. mouth
C. larynx
D. hair

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the source of sound production in humans. We need to identify which part of the human body is responsible for producing sound.

2. **Analyzing the Options**:
- **Option 1: Heart** - The heart is responsible for pumping blood and does not produce sound for communication.
- **Option 2: Mouth** - While the mouth is involved in the articulation of speech, it does not produce sound on its own.
- **Option 3: Larynx** - The larynx, also known as the voice box, is the primary organ responsible for sound production in humans.
- **Option 4: Hair** - Hair does not play any role in sound production.

3. **Identifying the Correct Answer**: Based on the analysis, the larynx is the correct answer because it contains the vocal cords, which vibrate to produce sound when air passes through them.

4. **Conclusion**: Therefore, the sound in humans is produced by the larynx.

**Final Answer**: Option 3: Larynx.

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