Question: To thaw frozen fish or shrimp
Option 0: Seal the food in a plastic bag and make sure it's completely sealed.  Place the bag in a tub of warm water.  Let it sit for a few hours to make sure it thaws completely before using.
Option 1: Seal the food in a plastic bag and make sure it's completely sealed.  Place the bag in a pot of cold water.  Let it sit for about an hour to make sure it thaws completely before using.
Answer: 1