A black object ................ while a white object ............... all colours of light.

Options

A. absorbs, refracts
B. reflects, absorbs
C. refracts, absorbs
D. absorbs, reflects

Explanation

To solve the question, we need to fill in the blanks in the statement: "A black object ................ while a white object ............... all colours of light."

### Step-by-Step Solution:

1. **Understanding the Properties of Colors**:
- A black object appears black because it absorbs all the colors of light. This means it does not reflect any light back to our eyes.
- A white object appears white because it reflects all the colors of light. This means it sends all the light back to our eyes.

2. **Filling in the Blanks**:
- For the first blank, we need to describe what a black object does with light. Since a black object absorbs all colors of light, we can fill in the first blank with "absorbs".
- For the second blank, we need to describe what a white object does with light. Since a white object reflects all colors of light, we can fill in the second blank with "reflects".

3. **Final Statement**:
- Therefore, the completed statement is: "A black object **absorbs** all colours of light while a white object **reflects** all colours of light."

4. **Choosing the Correct Option**:
- Based on our completed statement, the correct option is: "absorbs" for the black object and "reflects" for the white object.

### Final Answer:
A black object **absorbs** all colours of light while a white object **reflects** all colours of light.