You are presented with the question "Some what enclosures convert electricity into light and heat energy?" and the following answer choices: 
- made
 - glass
 - wool
 - support
 - fabric
 - cotton
 - cells
 - unique

Now knowing that some light bulbs convert electricity into light and heat energy and household light bulbs are evacuated glass enclosures with wires leading to a tungsten filament, choose the best answer.


 

  glass       