To reduce speed while going down a steep hill, you should do which of the following?

Answer: A — Both A and B.

The most effective method for reducing speed while going down a steep hill is to use a lower gear. This technique helps maintain control of the vehicle by allowing the engine to assist in slowing down through engine braking. When you shift to a lower gear, it increases the engine's RPMs and creates more resistance against the motion of the vehicle, which reduces the need to constantly apply the brakes. Driving in a zigzag pattern is not a safe or effective strategy for managing speed on a steep decline. Such maneuvers could lead to loss of control and increase the risk of an accident. The idea of zigzagging often arises from a misunderstanding of how to navigate steep inclines or declines safely. In summary, opting for a lower gear is the correct choice when approaching a steep hill, as it aids in speed control without relying heavily on the brakes, which could overheat and fail.