Show me how you would check that the brake lights are working on this car (I can assist you, if you need to switch the ignition on, please don’t start the engine)

Operate brake pedal, make use of reflections in windows, garage doors, etc, or ask someone to help. As this is now a show me question the examiner may check the brake lights for you. You may need to switch the ignition on, however you should not start the engine.