What should you be prepared here?

You answered correctly. In this situation, there are visible dark skid marks on the road, which indicate the presence of reduced grip—possibly due to mud or agricultural residue from the nearby tractor. This means you should be prepared for a longer braking distance and the possibility that your vehicle’s stability may be compromised. Both extending braking distance and negatively affecting driving stability are expected in such road conditions. You do **not** need to consider reducing the braking distance, because slippery surfaces will always require greater caution and longer stopping distances. If you see traces like these, always drive more carefully and be aware of limited vehicle control.