If there is gravel on the road, what should you do to avoid breaking the windscreen?

If there is gravel on the road, what should you do to avoid breaking the windscreen?
A)Nothing, because if the windscreen is clean the risk of it being broken by gravel is reduced.
B)Increase speed to reduce the effects of the impact.
C)Increase the gap from the vehicles ahead of us.Correct
There are various situations in which we should increase the safety distance to avoid a hazard. If there are stones or gravel on the road, we should increase it to avoid possible damage to the windscreen.