What should you do when approaching a steep downgrade?

Answer: B — Use a lower gear before entering

When approaching a steep downgrade, it is essential to use a lower gear before entering the descent. This allows the vehicle to utilize engine braking, which helps control speed without relying excessively on the brakes. Using a lower gear enhances traction and gives you better control while descending, as it prevents the vehicle from gaining speed too quickly. Engine braking can significantly reduce the risk of brake overheating or failure, which is a common hazard on steep descents. Additionally, maintaining a lower gear helps to ensure that the vehicle remains stable and adheres to the road, preventing loss of control. Shifting to a higher gear would increase the risk of the vehicle accelerating uncontrollably down the slope, while accelerating to gain speed is dangerous as it compromises vehicle control. Excessive braking can lead to brake fade, where brakes lose their effectiveness due to overheating. Therefore, shifting to a lower gear is the safest and most effective approach when facing a steep downgrade.