Fact 1: An electrical insulator slows the transfer of electricity.

Fact 2: Sulfur is a good electrical insulator.

Given the two facts above, answer the question "What is something that can be used to impede electrical transference?" with the following options: 
- A virus
 - hormones
 - sulfur
 - forces
 - tar
 - toxins
 - mutations
 - storms


 

   sulfur      