You are presented with the question "To make very small objects appear bigger, one can use what instead of light for illumination?" and the following answer choices: 
- electricity
 - electron beam
 - by indirect light
 - reflecting light
 - photons
 - Electrical energy
 - heat energy
 - mirrors

Now knowing that an electron microscope is used for seeing very small objects by making them appear bigger and electron microscopes use a beam of electrons as their source of illumination, choose the best answer.


 

  electron beam       