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

以下哪項屬於有助安全駕駛的正常觀察，而非分心或影響安全的狀態？

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

觀察應有節奏並兼顧前方，不能長時間盯著後視鏡。進食、操作手機或身體不適可能影響安全。