Question: To create a makeshift ice pack,
Option 0: take a sponge and soak it in oil. Put the sponge in a refrigerator and let it freeze. Once frozen, take it out and put it in a ziploc bag. You can now use it as an ice pack.
Option 1: take a sponge and soak it in water. Put the sponge in a refrigerator and let it freeze. Once frozen, take it out and put it in a ziploc bag. You can now use it as an ice pack.
Answer: 1