Which statement about blind spots and mirror adjustment is true?

• A. Mirrors can completely remove all blind spots
• B. Mirrors cannot reduce blind spots at all
• C. Properly adjusting mirrors reduces but does not remove all blind spots
• D. You only need to adjust the left mirror

Answer: (C)

The main idea is that mirrors are helpful for reducing blind spots, but they can’t remove them completely. The car’s shape, the position of its pillars, and how the mirrors project space mean there will always be some areas you can’t see in the mirrors alone. Even with proper adjustment, a small blind spot remains, especially near the rear corners. That’s why you should use well-adjusted mirrors to minimize blind spots and also perform a quick shoulder check (turning your head) before changing lanes. This combination is why the statement is true: mirrors reduce blind spots but don’t eliminate them. The other options are not correct because you can’t remove all blind spots with mirrors, mirrors do reduce them (not none), and you should adjust both side mirrors, not just the left.