The primary colours are

Options

A. Red, Blue and Yellow
B. Magenta, Yellow and Cyan
C. Red, Blue and Cyan
D. Blue, Green and Red

Answer

**Step-by-Step Solution:**

1. **Understanding Primary Colors**: Primary colors are the fundamental colors that can be combined to create a wide spectrum of other colors. In the context of light, the primary colors are different from those in pigment (like paint).

2. **Identifying the Primary Colors of Light**: The primary colors of light are red, green, and blue. These colors are used in various technologies, such as computer screens and televisions, to create a full range of colors through additive color mixing.

3. **Evaluating the Options**:
- **Option A**: Red, blue, yellow - This combination includes yellow, which is not a primary color of light.
- **Option B**: Magenta, yellow, cyan - These are secondary colors and not primary colors of light.
- **Option C**: Red, blue, cyan - Cyan is a secondary color, not a primary color of light.
- **Option D**: Blue, green, red - This option correctly lists the primary colors of light.

4. **Conclusion**: After evaluating all the options, the correct answer is option D: red, blue, and green.

**Final Answer**: The primary colors are red, blue, and green.

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