What should be done to maintain control while driving down a steep hill in icy conditions?

Maintaining control while driving down a steep hill in icy conditions is crucial for safety, and using a lower gear while braking gently is the most effective method. When driving in icy conditions, traction is considerably reduced, which means that sudden movements or excessive use of brakes can easily lead to a loss of control or skidding.

By using a lower gear, the engine helps slow the vehicle down through engine braking, which allows for better control without applying too much pressure on the brakes. Braking gently reduces the risk of locking the wheels, which can happen if the brakes are applied too forcefully on ice. This combination of engine braking and gentle braking allows for smoother handling and helps maintain a grip on the slippery surface.

In contrast, options that suggest accelerating or steering sharply could lead to a loss of control, as acceleration increases speed when maintenance of a lower speed is more beneficial in icy conditions. Maintaining a constant speed can also be hazardous, as it does not allow for adjustments based on the changing road conditions on a steep descent.