The visual violet is concered with

Options

A. Bright light
B. Dim light
C. Moderate light
D. Darkness.

Answer

### Step-by-Step Solution:

1. **Understanding Visual Violet**:
- Visual violet, also known as visual purple, is a biological pigment.

2. **Location of Visual Violet**:
- This pigment is found in the rods of the retina.

3. **Function of Rods**:
- Rods are a type of photoreceptor cell in the retina that are sensitive to light.

4. **Distinction Between Rods and Cones**:
- Rods are primarily responsible for vision in low light conditions (dim light), while cones are responsible for color vision and function best in bright light.

5. **Conclusion**:
- Since visual violet is associated with the rods, and rods are linked with dim light vision, we conclude that visual violet is concerned with dim light.

6. **Final Answer**:
- The correct answer is that visual violet is concerned with **dim light**.