During which stage of the Walk-and-Turn must the suspect count out loud?

The correct answer is during the walking stage of the Walk-and-Turn portion of the Standardized Field Sobriety Test. In this phase, the suspect is instructed to take a specific number of heel-to-toe steps in a straight line while counting each step out loud. This requirement serves multiple purposes: it helps to evaluate the suspect's attention and concentration level, which are often impaired by alcohol or other substances, and it also assesses their balance and coordination during the task.

Counting out loud while walking provides a further indication of cognitive function, as the dual task of walking and counting requires mental processing that can highlight deficits caused by impairment. The other stages of the Walk-and-Turn are more focused on balance and physical control rather than cognitive engagement through counting.