Which of the following heights would NOT be appropriate for mounting reflectors?

Mounting reflectors at the appropriate height is crucial for visibility and safety on the road. The correct choice indicates a height of 10 inches, which is considered too low for optimal reflector placement. Reflectors are typically mounted at a height that ensures they are easily visible to other drivers, especially those in larger vehicles, such as trucks and buses.

In general, reflectors should be mounted within a specific range, often between 24 inches and 60 inches above the ground, to make them effective at enhancing visibility. A height of 10 inches significantly increases the risk that the reflectors will not be seen by other drivers unless they are very close, which could lead to dangerous situations if the vehicle is on the side of a road or highway.

The other heights mentioned—30 inches, 36 inches, and 48 inches—are all within the common recommended range for reflector placement, making them appropriate choices for ensuring that the reflectors can be clearly seen and fulfill their purpose in enhancing safety and visibility.