What is hydroplaning?

• When the tires lose contact with the road surface when the roads are wet.
  Explanation:

  "On wet roads, your tires may lose contact with the road surface. This is called hydroplaning."
• When the tires lose contact with the road surface when the roads are dry.
• When the tires lose contact with the car when the roads are wet.
• When the tires lose contact with the car when the roads are dry.