What should you do with your brakes after encountering deep water?

Using your brakes lightly to dry them off is a key action after encountering deep water. This is because when brakes are submerged, water can hinder their efficiency and create a risk of reduced braking performance. Lightly applying the brakes allows for the heat generated by friction to evaporate any moisture that may have clung to the brake components. This not only ensures that the brakes are functioning properly but also maintains safety as you resume driving.

The other choices involve either unnecessary actions, like replacing the brakes, which can be costly and impractical if they are still in good condition, or simply ignoring the potential issue, which poses a safety hazard. Checking for unusual noises could also be prudent, but does not actively address the immediate concern of ensuring the brakes are effective after being wet.