Fact 1: Athermal insulator slows the transfer of heat.

Fact 2: Insulation helps to block conduction of heat.

Given the two facts above, answer the question "What prevents conduction?" with the following options: 
- water
 - sweating
 - glass
 - layers of fat
 - wind
 - insulator
 - a cuticle
 - conductor


 

      insulator   