If your conventional brakes fail suddenly, what should you avoid doing?

Answer: A — Shift into low gear

If your conventional brakes fail suddenly, you should avoid shifting into low gear. Shifting into low gear can cause your vehicle to slow down too quickly, which may result in a loss of control over the vehicle. Instead, it is recommended to use other techniques like pumping the brake pedal, applying the parking brake, or turning off the engine, which can help to slow down the vehicle more gradually and potentially regain control. Pumping the brake pedal can help build up brake pressure, applying the parking brake can provide additional stopping power, and turning off the engine can eventually bring the vehicle to a stop.