Final answer:
The proper times to apply the parking brake are when the brakes are not very hot, when you will be stopping for more than one hour, and when you are not testing the parking brake. Therefore, the answer is b. If you will be stopping for only one hour.
Step-by-step explanation:
The proper times to apply the parking brake are when the brakes are not very hot, when you will be stopping for more than one hour, and when you are not testing the parking brake. Therefore, the answer is b. If you will be stopping for only one hour. Applying the parking brake in this situation is not necessary, as the vehicle will not be parked for a long period of time. Applying the parking brake when the brakes are very hot can lead to brake shoe or brake drum damage due to the intense heat. It's recommended to allow the brakes to cool down before engaging the parking brake in such situations. Brakes can become less effective when they are excessively hot, and engaging the parking brake may cause the brake components to stick or bind, potentially resulting in damage. Therefore, it's important to exercise caution and follow recommended procedures based on the condition of the brakes.