$ The approximate distance between the sun and the Earth is about 148.7 million km.
! The dimensions of the habitates, regions of the earth are about 22.5 km

Options

A. If both As and R are correct and R is correct explanation of As
B. If both As and R are correct but R is not correct explanation of As
C. If As is correct, R is wrong
D. If both As and R are wrong.

Answer

To solve the question, we need to analyze the two statements provided: the assertion and the reasoning.

### Step-by-Step Solution:

1. **Identify the Assertion**:
- The assertion states that "the approximate distance between the Sun and the Earth is about 148.7 million km."
- This is a factual statement that can be verified. The average distance from the Earth to the Sun is indeed approximately 149 million kilometers, which makes the assertion true.

2. **Identify the Reasoning**:
- The reasoning states that "the dimensions of the habitat regions of the Earth are about 22.5 km."
- This statement is also factual. There are various habitats on Earth, and while the dimensions can vary, the statement can be considered true in a general sense.

3. **Evaluate the Relationship**:
- Now, we need to determine if the reasoning statement provides a correct explanation for the assertion statement.
- The assertion about the distance between the Sun and the Earth is unrelated to the dimensions of habitat regions on Earth. They are two separate facts without a direct connection.

4. **Conclusion**:
- Both statements are true, but the reasoning does not explain the assertion. Therefore, the correct option is that both the assertion and reasoning are true, but the reasoning is not the correct explanation of the assertion.

### Final Answer:
- Both the assertion and the reasoning statements are true, but the reasoning statement is not the correct explanation of the assertion.