How should you respond if your brakes fail while driving?

Answer: A — Pump the brake pedal and shift to a lower gear

When experiencing brake failure while driving, the most effective initial response is to pump the brake pedal and shift to a lower gear. Pumping the brake pedal can create enough pressure to help slow the vehicle down, as it may allow for some brake response if there is residual brake fluid or pressure left in the system. Shifting to a lower gear is also crucial because it engages engine braking, which can assist in reducing speed and gives you more control over the vehicle. This combination of actions not only helps in slowing the car but also prepares you to regain control of the vehicle as you navigate to a safe location. Utilizing both the brakes and engine braking can increase the chances of safely stopping the vehicle or at least reducing speed significantly. The other options do not adequately address the immediate need to slow down or regain control. Steering toward a side street may be part of the strategy after you have slowed down, while honking the horn serves little purpose in this critical moment. Immediately pulling off the road without first trying to slow down may lead to a more abrupt stop, increasing the risk of losing control or colliding with other objects.