Final answer:
The best method to prevent drowning from a fall overboard or a capsizing is to wear a life jacket or PFD and stay calm to conserve energy.
Step-by-step explanation:
To prevent drowning from a fall overboard or a capsizing, the best possible method is to wear a life jacket or personal flotation device (PFD). A life jacket provides buoyancy and keeps a person afloat, even if they are unable to swim.
It helps to distribute the weight more evenly, making it easier to stay afloat and conserve energy. Additionally, life jackets are designed to keep a person's head above water, allowing them to breathe.
Another important method is to stay calm and conserve energy. Panic and frantic movements can exhaust a person and make it harder to stay afloat. By staying calm and conserving energy, a person can focus on finding a safe spot to hold onto or wait for rescue.