What critical skill does the Walk-and-Turn test assess in relation to driving?

The Walk-and-Turn test is designed to evaluate an individual's ability to follow complex instructions while maintaining balance, which directly relates to the skills needed for safe driving. This test requires a participant to listen to and comprehend multi-step instructions while performing a physical task, which simulates the cognitive and physical tasks a driver must manage simultaneously on the road.

When driving, a motorist must pay attention to various stimuli, follow traffic regulations, and navigate the vehicle safely—all while maintaining coordination and balance. The Walk-and-Turn test aims to assess whether a subject can process verbal directions and execute them correctly without losing stability, which is essential for safe operation of a vehicle. This correlation makes option B the most relevant and accurate choice in the context of driving abilities assessed through SFST.