Not sure if there are any answer choices to chose from, but I would say ;
1: Terrestrial planets are much smaller than Gas Giants.
2: Gas Giants Have a lower temperature compared to Terrestrial Planets
3: Gas Giants are the only planets with rings, Terrestrial don't have rings. Hope this helped :)
I believe that it is because when you put the hand on ice it causes the hand too cool and prevents/slows the rate at which the nerves get damaged.