This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to pay for gas
Drive to the gas station.
Park next to a gas pump with your gas tank filler facing the pump.
Turn off your engine.

Pick from:
1). This is the first step that will allow you to call for confirmation that gas is available. Place a locked coin press on top of your gas tank spreader.
2). Determine if the pump has power to charge your car. Your car cannot pump electricity at all if the power has been turned off.
3). Turn off your headlights (if they are not already on). Use a hand signal (like a phone) to signal to the operator that you are about to release gas.
4). Pay for the gas before you pump it. If you're using a credit card, hand it to the attendant.
The answer is:
4).