Which of the following is NOT one of the three standardized field sobriety tests?

The Breathalyzer Test is not one of the three standardized field sobriety tests. The three standardized field sobriety tests recognized by the National Highway Traffic Safety Administration (NHTSA) are the Horizontal Gaze Nystagmus, the Walk-and-Turn, and the One-Leg Stand. These tests are designed to assess a person's physical and cognitive abilities in the context of detecting impairment due to alcohol or other substances.

The Breathalyzer Test, on the other hand, is a breath analysis method used to quantify blood alcohol content (BAC) levels, rather than an assessment of physical coordination or balance. While it is commonly used in DUI enforcement, it does not fit within the category of standardized field sobriety tests, which primarily evaluate a driver's ability to perform specific physical tasks that can indicate impairment.