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

Fact 2: Furthermore, the coating is an excellent electrical insulator.

Given the two facts above, answer the question "a coating does what to the transfer of electricity " with the following options: 
- amplifies
 - energy
 - heat
 - causes
 - slows
 - reduce
 - enables
 - retina


 

     slows    