ANSWER · C
When driving downhill, fully utilize engine braking to control speed. Engine braking has three significant characteristics: first, due to the differential, braking torque is distributed evenly to the left and right wheels, reducing the possibility of side slip and tail swing; second, it effectively reduces the frequency of foot braking, avoiding brake pad temperature rise from prolonged use, which would reduce or eliminate braking force; third, vehicle speed is always limited within a certain range, allowing timely speed reduction or stopping to ensure driving safety.
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