Why should you scan your mirrors regularly rather than only checking them occasionally?

Pick an answer

1. It is required only when merging onto a highway
2. Regular scanning keeps you aware of traffic changes, tire smoke, or shifting cargo before they become emergencies
3. Mirrors are mainly useful before a turn, not needed the rest of the time, an idea that doesn't match how occasionally works
4. It matters only at night when headlights are visible in them

Correct!

Not quite. The correct answer is highlighted.