In the Walk-and-Turn test, how many steps must the suspect take in each direction?

In the Walk-and-Turn test, the suspect is required to take nine steps in one direction and then turn around to take nine steps back. This specific number has been standardized, as the test assesses the subject's ability to follow instructions and maintain balance while performing a physical task indicative of their cognitive functioning. Taking nine steps in each direction allows for a consistent way to evaluate potential impairment. The other options do not align with the established protocol of the test, thus confirming the correct answer is indeed nine steps in each direction.