What should you do if your motorcycle begins to weave over rain grooves or bridge gratings?

Answer: B — Relax, maintain a steady speed, and ride straight across

When encountering rain grooves or bridge gratings that cause your motorcycle to weave, the best course of action is to relax, maintain a steady speed, and ride straight across. This approach allows for better control and stability of the motorcycle. Increasing your speed can lead to decreased control and may exacerbate the weaving. Similarly, braking harshly can create a loss of stability, potentially leading to skidding or losing grip on the surface. Steering sharply to either side is risky as it can result in a loss of balance or control, further increasing the chance of an accident. By staying calm and maintaining a steady approach, you provide your motorcycle with the best opportunity to navigate across these surfaces safely. Riding straight across helps in distributing your weight evenly, which is crucial for maintaining stability during such conditions.