You are presented with the question "What is ice good at?" and the following answer choices: 
- Physical weathering
 - Conducting electricity
 - heat production
 - water conservation
 - Slowing the transfer of ions
 - lowered energy cost
 - Slowing the transfer of heat
 - Heating up water

Now knowing that athermal insulator slows the transfer of heat and ice is a good thermal insulator, choose the best answer.


 

       Slowing the transfer of heat  