Which response best describes a common cue for detecting impairment during the One Leg Stand test?

The presence of hopping on one foot during the One Leg Stand test is a key indicator of impairment. This test is designed to assess a person’s balance, coordination, and ability to follow instructions. A sober individual should be able to maintain balance on one leg without excessive movement. Hopping suggests that the individual is struggling to maintain their balance, which is often a reflection of impaired motor skills and coordination.

In contrast, behaviors such as holding hands at the sides, pacing in place, and maintaining a steady posture do not indicate a clear sign of impairment in the context of this specific test. For instance, while some people may hold their arms out to help balance, doing so does not provide the same insight into impairment as hopping does. Thus, hopping is a strong cue, as it typically signifies that the person is having difficulty controlling their body and maintaining stability, which can be associated with impairment from alcohol or drugs.