Explanation:

Introduction:
When a vehicle moves on a road surface, the wheels rotate and move the vehicle forward. The distance covered by the vehicle depends on the circumferential movement of the wheels. However, in certain situations, the path travelled along the road surface can be more than the circumferential movement of the wheels. This can result in either slipping or skidding.

Difference between Slipping and Skidding:
Slipping and skidding are two different phenomena that occur when the path travelled along the road surface is more than the circumferential movement of the wheels. It is important to understand the difference between the two:

- Slipping: Slipping occurs when the wheels lose traction with the road surface and slide over it without rotating. This typically happens when the road surface is slippery, such as during rain or ice. Slipping can result in a loss of control over the vehicle and is generally considered to be more dangerous than skidding.

- Skidding: Skidding occurs when the wheels continue to rotate but lose their grip on the road surface. This can happen when the wheels are subjected to excessive braking or when the vehicle takes a sharp turn at high speed. Skidding can also result in a loss of control over the vehicle, but it is generally easier to recover from a skid compared to a slip.

Why Option 'B' is the Correct Answer:
Based on the given options, the correct answer is option 'B' - skidding. When the path travelled along the road surface is more than the circumferential movement of the wheels due to rotation, it indicates that the wheels have lost their grip on the road surface and are skidding.

In this scenario, the wheels are rotating, but they are unable to provide sufficient friction to maintain their grip on the road surface. This can occur when the vehicle takes a turn at high speed or when the brakes are applied abruptly. As a result, the vehicle moves in a direction that deviates from the intended path, leading to skidding.

Skidding can be detrimental to vehicle control and safety, as it reduces the driver's ability to steer and control the vehicle. It is important to drive cautiously and maintain proper control over the vehicle to avoid situations that can result in skidding.

Conclusion:
When the path travelled along the road surface is more than the circumferential movement of the wheels due to rotation, it results in skidding. Skidding occurs when the wheels lose their grip on the road surface while still rotating. It is important to drive safely and avoid situations that can lead to skidding to maintain control over the vehicle and ensure road safety.