During a road test, what condition should a technician look for when assessing brake operation, according to Technician A?

A sinking brake pedal at a complete stop indicates a potential problem with the brake system, usually pointing to issues such as hydraulic leaks, worn brake components, or a failing master cylinder. A properly functioning brake system should maintain a firm pedal feel without significant movement when pressure is applied. If the pedal sinks to the floor or feels spongy, it suggests that there might be air in the brake lines, a leak in the system, or other hydraulic issues that need addressing. Identifying this condition during a road test is crucial for ensuring safe vehicle operation and effective braking performance.

Other conditions such as vibrations when applying brakes, fluid level stability, and the absence of brake noise provide useful feedback but do not directly indicate the integrity of the brake pedal's operation as effectively as a sinking pedal does.