The relative humidity of a place is measured by the

Options

A. Amount of sunshine
B. Amount of water vapour in the air
C. Amount of the rainfall in the past 24 hours
D. Strength of the wind

Answer

**Step-by-Step Solution:**

1. **Understanding Relative Humidity**: Relative humidity is a measure of the amount of water vapor present in the air compared to the maximum amount of water vapor that the air can hold at a given temperature.

2. **Identifying Measurement Methods**: To determine relative humidity, we need to identify how it is measured. The options provided include:
- Amount of sunshine
- Amount of water vapor in the air
- Amount of rainfall in the past 24 hours
- Strength of the wind

3. **Evaluating Each Option**:
- **Option 1: Amount of sunshine** - This does not measure humidity. **(Incorrect)**
- **Option 2: Amount of water vapor in the air** - This directly relates to humidity, as relative humidity is based on the water vapor content. **(Correct)**
- **Option 3: Amount of rainfall in the past 24 hours** - While this relates to water, it does not measure the humidity of the air. **(Incorrect)**
- **Option 4: Strength of the wind** - Wind strength does not provide information about humidity levels. **(Incorrect)**

4. **Conclusion**: The correct answer is that the relative humidity of a place is measured by the amount of water vapor in the air.

**Final Answer**: The relative humidity of a place is measured by the amount of water vapor in the air.

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