What does it mean to 'cover the brake' when you spot a potential hazard ahead?

Pick an answer

1. Press the brake pedal fully to the floor immediately
2. Apply the parking brake as a precaution while the vehicle is still moving, though that is not correct
3. Physically cover the brake pedal with a protective mat
4. Move your foot from the accelerator to hover over the brake pedal without pressing it yet

Correct!

Not quite. The correct answer is highlighted.