Final answer:
Hydroplaning occurs when a car rides on a thin layer of water on the road, causing a loss of steering and braking. To control hydroplaning, you should let off the accelerator and don't hit the brakes. Reduce the speed and regain traction to be able to brake and steer effectively again.
Step-by-step explanation:
When the car rides up on a thin layer of water, causing a loss of effective steering and braking, it is called hydroplaning, and the best way to control this particular type of skid is to let off the accelerator and don't hit the brakes. Immediately, reduce the speed should pull the car back down through the water and you will regain traction and should be able to brake and steer effectively once again.