Assertion `:-` Walking on horizontal slippery ice can be much more tiring than walking on ordinary pavement.
Reason `:-` walking on ice requires small steps to prevent slipping.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are False

Explanation

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

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that walking on horizontal slippery ice can be much more tiring than walking on ordinary pavement.
- This is due to the nature of the surface; ice is slippery, which makes it harder to maintain balance.

**Hint**: Consider how friction affects walking on different surfaces.

2. **Understanding the Reason**:
- The reason given is that walking on ice requires small steps to prevent slipping.
- When walking on slippery surfaces, taking small steps helps maintain balance and reduces the risk of falling.

**Hint**: Think about how the size of steps influences stability on slippery surfaces.

3. **Connecting Assertion and Reason**:
- The reason explains why the assertion is true. Walking on ice requires more effort to maintain stability, which can lead to increased fatigue.
- The need to take small steps means that the walker has to exert more energy to keep their balance, making the activity more tiring.

**Hint**: Reflect on how maintaining balance affects energy expenditure during walking.

4. **Conclusion**:
- Both the assertion and the reason are correct. The reason provides a valid explanation for the assertion. Walking on ice is indeed more tiring due to the need for small steps to prevent slipping.

**Hint**: Consider how explanations help clarify the relationship between two statements.

### Final Answer:
Both the assertion and the reason are correct, and the reason correctly explains the assertion. Walking on slippery ice is more tiring due to the need for small steps for stability.