ANSWER · B
Although coasting reduces fuel consumption, it is dangerous. When driving downhill, do not turn off the engine or coast in neutral. Relying solely on the brakes to control speed can overburden them and overheat the brake pads, leading to brake failure on long descents. The proper method on a long downhill is to use a low gear and let engine braking reduce the load on the brakes and the number of brake applications, preventing overheating and brake fade. On icy, snowy, or muddy roads, engine braking also helps prevent skidding.
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