Why should you adjust your rearview mirror before driving?

Adjusting your rearview mirror before driving is essential to ensure clear visibility of traffic behind you. A properly positioned rearview mirror allows you to see vehicles and objects approaching from the rear, which is crucial for safe driving maneuvers such as changing lanes, merging, or reversing. Maintaining awareness of your surroundings is a key aspect of defensive driving, and having a clear view through your rearview mirror enhances your ability to react to potential hazards.

The other options, while they may contain some elements of truth, do not address the primary purpose of adjusting the rearview mirror. Enhancing passenger comfort is important, but it is not the primary focus when ensuring driving safety. Minimizing distractions is indeed valuable for safe driving, but the primary function of the rearview mirror is to provide visibility of what is behind you. Complying with safety regulations can encompass numerous driving practices, but the direct intent of adjusting the rearview mirror is specifically tied to achieving a clear view of traffic.