The distance a vehicle travels until it stops, once the brakes are applied, is called?

Answer: A — Braking distance

The braking distance is the distance a vehicle travels until it comes to a complete stop after the brakes are applied. Option B is incorrect because stopping distance refers to the total distance a vehicle travels while braking, including the time it takes to react and apply the brakes. Option C is incorrect because reaction distance only refers to the distance a vehicle travels during the driver's reaction time before applying the brakes. Option D is incorrect because acceleration distance is the distance a vehicle covers while accelerating from a complete stop to its desired speed. It is not related to braking.