Which of the following is required by law for an authorized inspection station?

The requirement for having a full-time registered inspection mechanic at an authorized inspection station is essential because this individual is responsible for conducting the inspections according to state regulations. The mechanic must have the appropriate training and certification to ensure that all vehicles are assessed accurately and comply with safety standards. This role is critical in maintaining the integrity of the inspection process, which is aimed at ensuring vehicles are safe for operation on public roads.

While other options might contribute to the functioning of an inspection station, such as customer service representatives or a set schedule for inspections, they are not mandated by law in the same way that having a qualified inspection mechanic is. The presence of an inspection advisory board is also not a statutory requirement for every inspection station. Thus, having a full-time registered inspection mechanic is the cornerstone of compliance with the state's inspection laws.