Assertion : Two person on the surface of the moon cannot talk to each other.
Reason : There is no atmosphere on moon.

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 assertion is false but reason is true.

Explanation

To solve the question regarding the assertion and reason about sound communication on the moon, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Two persons on the surface of the moon cannot talk to each other."
- This means that communication through sound is not possible between two individuals on the moon.

2. **Understanding the Reason**:
- The reason given is "There is no atmosphere on the moon."
- An atmosphere is essential for sound to travel because sound waves require a medium (like air, water, or solid materials) to propagate.

3. **Linking Assertion and Reason**:
- Since sound requires a medium to travel and the moon has no atmosphere (it is a vacuum), sound cannot propagate.
- Therefore, if there is no medium for sound to travel, two people cannot hear each other, which supports the assertion.

4. **Conclusion**:
- Both the assertion and the reason are true.
- The reason provided explains why the assertion is true, as the lack of atmosphere directly affects the ability of sound to travel.

5. **Final Answer**:
- Since both the assertion and reason are true, and the reason correctly explains the assertion, the answer is that both are true and the reason is the correct explanation of the assertion.

### Answer Option:
- Option 1: Both assertion and reason are true, and the reason is the correct explanation of the assertion.

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