Hydroplaning occurs when a vehicle's tires lose traction and ride on top of water during heavy rain. To help prevent hydroplaning, you should:

• Ensure your tires have adequate tread depth
• Maintain the proper tire pressure
• Reduce your speed when driving in the rain
• All of the above
  Explanation:

  "To prevent hydroplaning during heavy rain, it's important to maintain your tires properly and drive at a safe speed. Consider factors like tread depth, tire pressure, and vehicle speed to keep control of your vehicle."