What is the colour for danger ?

Options

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

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the color associated with danger.

2. **List the Options**: The options provided are blue, green, yellow, and red.

3. **Recall Common Knowledge**: It is widely known that red is the color commonly associated with danger, such as in traffic signals and warning signs.

4. **Understand the Reasoning**: The reason red is used for danger is based on its properties in relation to light.

5. **Explain the Concept of VIBGYOR**: VIBGYOR stands for the colors of the rainbow: Violet, Indigo, Blue, Green, Yellow, Orange, and Red.

6. **Discuss Wavelength and Scattering**: In the VIBGYOR spectrum, red has the longest wavelength and scatters the least compared to other colors.

7. **Provide Real-World Examples**: In conditions like fog or smog, red light is less scattered, making it more visible than other colors. This visibility is crucial for safety, especially in low-visibility conditions.

8. **Conclude the Answer**: Therefore, the color used for danger is red.

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

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