Assertion: Pulling a lawn roller is easier than pushing it.
Reason:Pushing increases the apparent weight and hence the force of friction.

Options

A. If both assertion `&` Reason are True `&` the Reason is a corrrect explanation of the Asserion.
B. If both Assertion `&` Reason are True but Reason is not correct explanation of the Assertion.
C. If Assertion is Trie but the Reason is False.
D. If both Assertion `&` Reason are false

Explanation

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

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that pulling a lawn roller is easier than pushing it. This implies that the force required to move the roller is less when pulling compared to pushing.

2. **Analyzing the Forces When Pushing**:
- When you push the lawn roller, you apply a force \( F \) at an angle \( \theta \) to the horizontal.
- The vertical component of this force is \( F \sin \theta \), which acts downward, adding to the weight of the roller.
- The normal force \( N_1 \) acting on the roller when pushing can be expressed as:
\[ N_1 = mg + F \sin \theta \]
- Here, \( mg \) is the weight of the roller.

3. **Analyzing the Forces When Pulling**:
- When you pull the lawn roller, the force \( F \) is also applied at an angle \( \theta \) to the horizontal.
- The vertical component of this force is still \( F \sin \theta \), but this time it acts upward, reducing the effective weight of the roller.
- The normal force \( N_2 \) acting on the roller when pulling can be expressed as:
\[ N_2 = mg - F \sin \theta \]

4. **Comparing the Normal Forces**:
- From the equations derived, we see that:
- While pushing: \( N_1 = mg + F \sin \theta \) (increases the normal force)
- While pulling: \( N_2 = mg - F \sin \theta \) (decreases the normal force)
- This means that the normal force is greater when pushing compared to pulling.

5. **Understanding Friction**:
- The force of friction \( f \) is given by:
\[ f = \mu N \]
- Where \( \mu \) is the coefficient of friction.
- Since \( N_1 > N_2 \), the frictional force when pushing is greater than when pulling.

6. **Conclusion**:
- Therefore, pulling the lawn roller is indeed easier than pushing it because pushing increases the normal force and hence the frictional force, making it harder to move.

### Final Answer:
- The assertion is true, and the reason provided is a correct explanation for the assertion. Thus, the correct option is A.