In colour blindness red , green and other colour appear

Options

A. White
B. Yellow
C. Grey
D. Pink

Answer

### Step-by-Step Solution:

1. **Understanding Color Blindness**:
- Color blindness is a genetic disorder that affects the ability to see or differentiate between colors. It is primarily caused by defects in genes responsible for color vision.

2. **Types of Color Blindness**:
- The most common types of color blindness are red-green color blindness, where individuals have difficulty distinguishing between red and green hues.

3. **Visual Perception in Color Blindness**:
- Individuals with red-green color blindness perceive red, green, and other colors differently. Often, these colors may appear muted or indistinguishable.

4. **Common Perception**:
- In many cases, colors like red and green may appear as shades of gray to individuals with color blindness. This means they cannot differentiate between these colors effectively.

5. **Analyzing the Options**:
- The question provides options: white, yellow, gray, and pink.
- Since individuals with color blindness often see red, green, and other colors as gray, we can conclude that the correct answer is gray.

6. **Final Answer**:
- Therefore, the correct option is **gray**.