Fact 1: Alight bulb requires electrical energy to produce light.

Fact 2: Light is a part of the electromagnetic spectrum.

Given the two facts above, answer the question "A bulb requires electrical energy to produce part of what kind of spectrum?" with the following options: 
- an electron microscope
 - magnetic
 - autism spectrum
 - electromagnetic
 - rain or sun shine
 - direct energy
 - field
 - hydrogen and oxygen


 

    electromagnetic     