What is the primary safety benefit of adjusting your outside mirrors?

• A. Improve audio quality
• B. Increase windshield height
• C. Improve braking distance
• D. Reduce blind spots

Answer: (D)

Reducing blind spots through properly adjusted outside mirrors is the safety improvement. When the mirrors are set so you can see vehicles in the lanes beside you, you gain visibility that helps you detect cars you might otherwise miss during lane changes or merges. That awareness lowers the chance of SIDE-swipe or cutting off another driver in your blind spot. The other options don’t pertain to what mirrors influence: audio quality, windshield height, or braking distance aren’t affected by how you position the outside mirrors. So the primary safety benefit is fewer blind spots.