What should you do if you must drive in heavy rain?

If you must drive in heavy rain, slowing down, increasing your following distance, and using your headlights are critical steps to ensure safety. Heavy rain reduces visibility and can create hazardous driving conditions due to wet roads, which are more likely to lead to hydroplaning. By slowing down, you give yourself more time to react to potential hazards such as sudden stops by other vehicles or obstacles in the road.

Increasing your following distance is equally important because it allows for a longer stopping distance, which is vital when the roads are slick. This extra space can help prevent collisions in case of sudden braking or loss of control by other drivers. Additionally, using your headlights enhances visibility, not only for yourself but also for others on the road. Headlights help you see better in reduced visibility conditions and make your vehicle more visible to other drivers.

Finding a safe place to stop, while it may seem prudent, is not always feasible in heavy rain, especially on busy roads. Also, speeding up and decreasing following distance would compound the dangers you face in such conditions. Therefore, option B reflects a comprehensive and responsible approach for driving safely in heavy rain.