Final answer:
When driving through a hill or entering a curve, it is important to slow down to anticipate oncoming vehicles and avoid collision.
Step-by-step explanation:
When driving through a hill or entering a curve, it is important to slow down to anticipate oncoming vehicles and avoid collision. This allows you to have better control of your vehicle and react quickly if necessary. Additionally, you should stay on your side of the road and be mindful of blind spots where oncoming vehicles may be hidden.