Name the characteristic of the sound which distinguishes a sharp sound from a grave or dull sound:

Options

A. Intensity
B. Echo
C. Pitch
D. Resonance

Explanation

To answer the question about the characteristic of sound that distinguishes a sharp sound from a grave or dull sound, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a specific characteristic of sound that differentiates a sharp sound from a dull sound.

2. **Identify the Options**: The options provided are intensity, echo, pitch, and resonance. We need to analyze each option to see which one fits the description.

3. **Define Each Option**:
- **Intensity**: This refers to the loudness or volume of the sound, not the quality or type of sound.
- **Echo**: This is the reflection of sound, which does not differentiate between types of sounds.
- **Pitch**: This refers to how high or low a sound is, which is directly related to the frequency of the sound wave. Sharp sounds have a high pitch, while dull sounds have a low pitch.
- **Resonance**: This refers to the amplification of sound when it matches the natural frequency of an object, but it does not distinguish between sharp and dull sounds.

4. **Select the Correct Answer**: Based on the definitions, pitch is the characteristic that distinguishes a sharp sound (high pitch) from a grave or dull sound (low pitch).

5. **Final Answer**: The characteristic of sound that distinguishes a sharp sound from a grave or dull sound is **Pitch**.