Final answer:
To ensure safety after driving through water puddles, one should test the brakes by applying them. This helps verify that the brakes function properly by re-establishing contact between the brake pads and discs.
Step-by-step explanation:
After driving through water puddles, test the brakes by applying them. This is the correct action to ensure the brakes are functioning properly after being exposed to water, which could affect their performance. When you drive through a puddle, water can get on the brake discs or pads, which might cause the brakes to fail or not operate as effectively. To test them, you would gently apply the brakes to make sure they are still providing the needed stopping power and that the contact between the brake pads and the discs has been restored.