Why should mirrors on a passenger vehicle be kept clean and free of obstruction, similar to windows and windshields?

Pick an answer

1. A dirty or obstructed mirror reduces the driver's ability to monitor both traffic and passengers effectively
2. Mirror cleanliness is purely a cosmetic concern with no safety implication
3. This concern applies only to mirrors used for backing, not general driving
4. Mirrors do not require cleaning as often as windows since they are used less, and a light film rarely affects their overall usefulness

Correct!

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