What specific caution should drivers take during twilight hours?

Answer: B — Be especially careful passing other vehicles

Twilight hours present unique challenges for drivers due to the changing light conditions, which can lead to decreased visibility. During this time, drivers should be especially cautious when passing other vehicles. Some motorists may not have their headlights on, making it difficult to see them or gauge their speed and distance. Additionally, other drivers may be less alert to the presence of vehicles on the road as they adjust to the diminished light. Being vigilant while passing is critical because visibility is limited, and drivers may struggle to notice potential hazards or make safe decisions. Instead of assuming that visibility is similar to that during full daylight, taking extra care in these conditions helps ensure safety for all road users. This approach reduces the risk of accidents that could occur due to misjudgment in a situation where visibility is compromised.