Which of the following is NOT a test administered during a standardized field sobriety test?

The selection of the field breathalyzer test as the answer can be understood in the context of how standardized field sobriety tests (SFST) are defined and utilized by law enforcement officers. Standardized field sobriety tests are designed to assess a person's level of impairment due to alcohol consumption through observable physical tasks. These tests typically include exercises such as the horizontal gaze nystagmus, the walk and turn, and the one leg stand, all of which require physical coordination and balance.

In contrast, a field breathalyzer test, while often used in conjunction with SFSTs to measure blood alcohol content (BAC), is not considered a physical performance test. Instead, it is a breath analysis tool that provides a numeric measurement of alcohol concentration in the breath, which may aid officers in making a determination of sobriety but does not evaluate a person's motor skills or physical coordination directly.

Understanding the distinction between physical performance tasks and those that involve measuring BAC is essential for comprehending the structure and purpose of SFSTs. Thus, the field breathalyzer test is categorized separately from the standardized physical tests that are performed in the context of assessing sobriety roadside.