Final answer:
Sound would travel faster in cork than in ice, but slower than in water because cork is a solid material with a lower density than water.
Step-by-step explanation:
According to the given information, sound travels faster in solids than in liquids, and faster in liquids than in gases. So, in order to find a medium that sound would travel faster than ice but slower than water, we need to look for a substance that is a solid but less dense than water. Out of the given options, cork fits this description. Cork is a solid material with a lower density than water, so sound would travel faster in cork than in ice, but slower than in water.