You are presented with the question "What convert electricity into light and heat energy?" and the following answer choices: 
- cats
 - copper
 - LEDs
 - trains
 - Cars
 - cells
 - energy
 - buses

Now knowing that some light bulbs convert electricity into light and heat energy and light source is an ultra-bright, unbreakable LED Bulb, choose the best answer.


 

   LEDs      