What is the check for the parking brake during the inspection?

The key aspect of ensuring that a parking brake is functioning effectively is its ability to hold the vehicle securely in place on an incline. During an inspection, the primary purpose of the parking brake is to prevent the vehicle from rolling away when it is parked, especially on a slope. Thus, a successful test involves engaging the parking brake and confirming that it can hold the vehicle firmly without slipping. This is crucial for safety, as a malfunctioning parking brake could result in accidents or damage.

The other options, while they may relate to other aspects of vehicle maintenance or operation, do not address the fundamental requirement of the parking brake's practical performance in securing the vehicle when parked. Therefore, the focus on the parking brake's ability to hold the vehicle securely is the correct and necessary component evaluated during inspections.