Why should you avoid refueling a passenger vehicle while passengers are still aboard?

Pick an answer

1. Fueling with passengers aboard saves time with no real downside, since modern fuel pumps are designed to prevent vapor buildup
2. It only matters if the fuel tank is completely empty
3. Fuel vapors and fire risk near an occupied vehicle make it safer to keep passengers off during fueling
4. It is only a rule for vehicles running on diesel

Correct!

Not quite. The correct answer is highlighted.