Question

5.) as you apply the foot brake, the pedal goes to the floor. what should you do first?
turn off the ignition.
shift to a lower gear.
apply the parking brake.
pump the brake pedal three or four times.

Explanation:

When the foot - brake pedal goes to the floor, pumping the brake pedal three or four times can sometimes build up brake pressure if there is a minor issue like a small air pocket in the braking system. Turning off the ignition while the vehicle is in motion can cause power steering and power - brake assist to fail (if applicable) and is dangerous. Shifting to a lower gear is a good step but not the first one in this case. Applying the parking brake should be a later step as it is a different braking mechanism and not the immediate first response for a low - pedal foot - brake situation.

Answer:

Pump the brake pedal three or four times.