When your rearview mirror is set to its night setting, it may hamper your ability to ___________?

Question

Recover from glare to the read judge the distance of traffic behind you check objects to the right rear quarter split your focus between the traffic ahead and behind you

Answer 1

It will split your focus between the traffic behind you...

Answer 2

what is the question???? how ever your rear view mirror at night should not be considered your aid to judge your decision in your driving... it is only to help you to verify the existence of another vehicle behind you... full stop.