Speed, distance, and safety margins
Low grip means bigger margins
On wet, icy, or loose surfaces, you need more space and gentler steering and braking.
What to watch for
The question mentions wet road, ice, snow, gravel, oil, aquaplaning, or tyre grip.
The rule
The rule explains exactly how to answer any question of this type — and why the obvious wrong answer fails.
See the rule →Common trap
Don't keep dry-road habits just because the road still looks passable.