The fundamental characteristic of all waves are

Options

A. wavelength
B. frequency
C. velocity
D. all of the above

Explanation

### Step-by-Step Solution

1. **Understanding Waves**:
- Waves are disturbances that transfer energy from one point to another without the physical transfer of matter.

2. **Energy Transfer**:
- The fundamental characteristic of all waves is that they transfer energy. When a wave travels, it carries energy with it.

3. **Wave Velocity**:
- All waves travel with a certain velocity. This means that there is a speed at which the wave propagates through a medium or space.

4. **Frequency**:
- Waves exhibit periodic motion, meaning they repeat a certain pattern over time. The frequency of a wave is defined as the number of complete cycles (or waves) that pass a given point in one second. It is measured in Hertz (Hz).

5. **Wavelength**:
- The wavelength is the distance between successive crests (or troughs) of a wave. It is a measure of the length of one complete cycle of the wave.

6. **Summary of Characteristics**:
- The fundamental characteristics of all waves include:
- Energy transfer
- Velocity
- Frequency
- Wavelength

### Final Answer
The fundamental characteristics of all waves are energy transfer, velocity, frequency, and wavelength.

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