Final answer:
B) 3-4 seconds. Defensive drivers stay at least 3-4 seconds behind the vehicle ahead while driving.
Step-by-step explanation:
Defensive drivers stay at least 3-4 seconds behind the vehicle ahead while driving.
By maintaining a safe following distance, drivers have enough time to react and brake in case of sudden stops or emergencies.
For example, if the vehicle ahead suddenly stops, a defensive driver can avoid a collision by having enough distance to stop their own vehicle.