Why should you regularly apply the brakes with force at standstill?

You answered correctly. Regularly applying the brakes firmly while stationary is important to check the mechanical and hydraulic function of the braking system. By doing this, you can notice whether there are problems with the brake components or if the hydraulic system has leaks. This helps detect issues early and ensures your brakes work reliably in emergencies. However, simply pressing the brakes while stopped does not accurately measure how well the brakes can slow down the vehicle; brake deceleration must be tested while driving under controlled conditions. This distinction helps you focus on checking the technical function of the braking system while stationary.