Which is a normal observation task that supports safe driving, rather than a distraction or an unsafe condition?

以下哪项属于有助安全驾驶的正常观察，而非分心或影响安全的状态？

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Keep attention balanced with the road ahead; do not stare into mirrors. Eating, phone use or illness can impair safety.

观察应有节奏并兼顾前方，不能长时间盯着后视镜。进食、操作手机或身体不适可能影响安全。