As a Service Station Attendant, you may need to help customers with spark plugs, flat tires, burnt-out headlights, broken windshield wipers, and more. The interviewer would like to know that you can explain these issues to someone no matter their depth of knowledge. Think about the way you would explain spark plug replacement to someone who knew nothing about vehicles, for instance. Overall, it's essential to show the hiring authority that you can deliver a simple explanation to their customers who need minor repairs on their vehicles.