What can be caused if the road surface suddenly becomes worse?

When the road surface suddenly becomes worse, such as becoming rough, uneven, or slippery, it can cause your vehicle to slide or skid because the tires lose grip. This is why "danger of sliding and skidding" is correct. Additionally, changes in the road surface can alter the way your tires make contact, causing noticeable differences in tire noise.

The option "longer reaction distance" is not directly caused by a worsening road surface. Reaction distance depends on the driver's perception and response time, not the road condition itself. However, braking distance may increase due to reduced tire grip, but that is separate from reaction distance.

Understanding these effects helps you adjust your driving by slowing down and being more cautious when road conditions worsen suddenly.