Assertion : Planet is a heavenly body revolving round the sun
Reason : Star is luminous body made of gasesous .

Options

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

Explanation

To solve the question, we need to analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "a planet is a heavenly body revolving around the sun."
- By definition, a planet is indeed a celestial body that orbits a star (in our case, the Sun). This statement is correct.

2. **Understanding the Reason**:
- The reason states that "a star is a luminous body made of gases."
- This statement is also correct. Stars, including our Sun, are primarily composed of hydrogen and helium gases and produce light through nuclear fusion processes.

3. **Analyzing the Relationship**:
- While both statements are correct, we need to determine if the reason correctly explains the assertion.
- The assertion is specifically about planets, while the reason discusses stars. There is no direct relationship between the two statements in terms of explanation.

4. **Conclusion**:
- Both the assertion and the reason are correct, but the reason does not provide a valid explanation for the assertion. Therefore, we conclude that the assertion is true, the reason is true, but the reason does not explain the assertion.

### Final Answer:
- Assertion: True
- Reason: True
- The reason does not explain the assertion.

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