Assertion: Venus is the brightest planet in the solar system.
Reason: It appears bright because it reflects 75% of the light which it receives from Sun.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

To analyze the assertion and reason provided in the question, we can break it down step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Venus is the brightest planet in the solar system."
- This is true because when observed from Earth, Venus appears brighter than other planets due to its proximity and reflective properties.

2. **Understanding the Reason**:
- The reason given is that "It appears bright because it reflects 75% of the light which it receives from the Sun."
- This is also true. Venus has a highly reflective atmosphere composed of thick clouds that reflect a significant amount of sunlight.

3. **Analyzing the Relationship**:
- The assertion is correct, and the reason is also correct.
- The reason explains why Venus is the brightest planet: its ability to reflect a large portion of sunlight contributes to its brightness.

4. **Conclusion**:
- Since both the assertion and the reason are true, and the reason provides a correct explanation for the assertion, we conclude that both the assertion and reason are valid.

### Final Answer:
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

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