Fact 1: An electron microscope is used for seeing very small objects by making them appear bigger.

Fact 2: Electron microscopes allow scientists to magnify objects hundreds of thousands of times.

Given the two facts above, answer the question "Electron microscopes are used for seeing very small things and doing what?" with the following options: 
- making them small
 - observe it
 - duplicate itself
 - making them tiny
 - making them invisible
 - rays or beams
 - magnifying them
 - major threat to health


 

       magnifying them  