Racing on public roads is:
Answer: C — Never allowed
Racing on public roads is never allowed because it poses a serious safety hazard for both the racers and other drivers on the road. While option A may seem like a valid choice, it is not possible to guarantee complete safety while racing on public roads. Option B is incorrect because highways are considered public roads, and thus, racing is not allowed on them either. Option D may seem like a possible choice, but again, the time of day does not guarantee safety while racing on public roads. It is important to follow traffic laws and regulations and use designated and safe areas for racing activities.