A parking brake system must be able to hold a car on the hillside or inclination and when the service brakes are already functional.
Option C is correct.
Parking is an activity where a vehicle is stopped or leaving it for a short period of time when not require to be used.
The system which is used in emergency conditions is called parking brake system or the hand brakes which is being used to stop the vehicle. This is mainly done when the brakes of the car is not functioning properly or it could be jammed. It is also needed when the car is driven on the hilly areas.
Therefore, the correct option is option C.
Learn more about the angle parking in the related link:
https://brainly.com/question/24084436
#SPJ2
