Which of the following is the colour of danger ?

Options

A. Red
B. White
C. Green
D. Blue

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the color that represents danger. This is a common association in many cultures and contexts, particularly in safety signage.

2. **Visibility from a Distance**: The color of danger should be easily visible from a distance. This is important for safety reasons, as it allows people to recognize danger quickly.

3. **Effect of Air on Light**: When light travels through the air, it can be scattered by dust particles. This scattering can affect how well we can see different colors from a distance.

4. **Scattering of Colors**: Different colors of light scatter differently in the atmosphere. Blue light scatters more than red light due to its shorter wavelength. This means that blue light can become less visible over distances because it gets scattered in various directions.

5. **Choosing the Right Color**: Since red light scatters the least, it remains more visible over long distances compared to other colors. This is why red is commonly used for danger signs and signals.

6. **Conclusion**: Based on the reasoning above, the color that is universally recognized as the color of danger is red.

**Final Answer**: The color of danger is red.

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