What is primarily observed for evidence of DWI?

The correct answer highlights the importance of sensory evidence in identifying potential DWI (Driving While Intoxicated) cases during assessments. Sensory evidence refers to observable behavioral cues and physiological responses that law enforcement officers assess when determining a person's level of impairment.

In the context of DWI evaluations, sensory evidence includes factors such as the individual's ability to follow instructions, their coordination, balance, and the presence of nystagmus in the eyes, particularly the Horizontal Gaze Nystagmus (HGN) test. This test specifically measures the involuntary eye movement as it tracks an object horizontally, which can indicate impairment due to alcohol consumption.

While documentation, technological evidence, and physical evidence play roles in the broader context of enforcement and legal proceedings, they do not directly provide the immediate insights into a person's impairment that sensory evidence does during roadside assessments. Sensory evidence is thus fundamental for officers to make initial evaluations in DWI situations.