What action should be taken during a heavy rainstorm?

Answer: C — Reduce speed and increase following distance

Reducing speed and increasing the following distance during a heavy rainstorm is crucial for maintaining control and ensuring safety on the road. Rain can create slippery conditions, increasing the likelihood of hydroplaning, where the tires lose contact with the road surface. By lowering speed, drivers can react more effectively to sudden changes, such as another vehicle braking unexpectedly or encountering pooling water. Additionally, increasing the following distance gives drivers more time to respond to potential hazards. With a greater buffer zone, there's less risk of collisions, allowing for smoother braking and safer maneuvering. Together, these actions help manage the unique challenges posed by driving in heavy rain, making it essential for drivers to adapt their behavior in such conditions.