What should you do if a brake warning light activates while driving?

Answer: B — Pull over safely and check the brake system

When the brake warning light activates while driving, it is crucial to pull over safely and check the brake system. The warning light indicates a potential problem within the braking system, which could lead to brake failure if not addressed promptly. Ensuring your safety and the safety of others on the road is paramount, so taking immediate action is necessary. Pulling over allows you to assess the situation without the risk of continuing to drive with potentially compromised brakes. It is essential to investigate the cause of the warning light, whether it is related to brake fluid levels, air in the brake lines, or another critical issue. Ignoring the warning because the brakes seem to work or assuming that you can continue to a maintenance shop can lead to dangerous situations. Similarly, while reducing speed is a prudent action, it does not resolve the underlying issue indicated by the warning. The best course of action is to address the problem immediately by stopping in a safe location and conducting a thorough check of the brake system.