Which item is NOT one of the four OLS test clues?

The correct choice indicates that "Exaggerated bending of knees" is not one of the four clues utilized in the One-Leg Stand (OLS) test for detecting impairment. The OLS test is designed to measure a subject's ability to maintain balance while performing a simple task, and is commonly used by officers during field sobriety testing.

The standard clues established for the OLS test focus on observable behaviors that indicate a lack of coordination or balance. "Puts foot down," "sways while balancing," and "uses arms for balance" are all recognized as direct indicators of difficulty in maintaining stability, which helps officers assess a subject’s potential level of impairment.

In contrast, "exaggerated bending of knees" does not serve as a distinct or recognized clue for the OLS test. While bending of the knees may occur during an attempt to maintain balance, it is not a specific behavioral clue listed in the standardized procedures of the OLS test. Understanding what constitutes the verified cues is critical for accurate assessment in sobriety testing situations.