Before pulling away from a curb, why should you check your mirrors even if no one signaled they were boarding late?

Pick an answer

1. Mirror checks before departure are optional if the door is already closed, since a closed door confirms no one is still boarding
2. Passengers are always fully visible without checking mirrors
3. A passenger could still be approaching or crossing near the vehicle out of your direct view
4. It is only necessary to check mirrors in the rain

Correct!

Not quite. The correct answer is highlighted.