You are presented with the question "What can turn a lightbulb on?" and the following answer choices: 
- Electric current
 - cigarettes
 - Shining a flashlight on it
 - hydrogen and oxygen
 - Unplugging the lamp
 - direct energy
 - Sunlight
 - heat energy

Now knowing that when electricity flows to a light bulb , the light bulb will turn on and an electric current is a flow of electric charge, choose the best answer.


 

 Electric current        