🔍 Key Concepts

• Gasoline fumes are heavier than air and can collect in bilges and low spaces • Basic fire and explosion prevention steps during and after fueling • Required safety checks before starting a gasoline engine on a boat

💭 Think About

• What happens to gasoline vapors inside a closed boat right after fueling, and where do they tend to accumulate? • Before you turn the key, what safety step helps you discover and remove any accumulated fuel vapors? • Looking at each choice, which one actually reduces the risk of an explosion, and which ones might increase that risk?

✅ Before You Answer

• Identify which option removes or clears fumes from enclosed spaces • Eliminate any choice that would trap vapors inside the vessel • Confirm which option is consistent with standard safe fueling procedures taught in basic boating safety courses