Answer C
Obvious Answers:
-Reach into the container with something to snag the prize.
-Try a magnet on a string in case it the prize is metallic.
-Try hooking that loop. (Remember to use a hook that does not float and lots of patience.)
Less Obvious Answers:
-Pry the container off the table.
-Turn the table upside down.
-Break the container.
Unique Solutions:
-Add water to the container so that the prize floats out the top!
-Add rocks (or other material) to the container to raise the water level.
-If you want to be dramatic, maybe a chemical reaction of added substances to create a volcanic effect that forces the prize out the top.
Book One Unique Solution:
-Travel back in time and snag that prize before it goes in. (But would the Law of Equilibrium let you do that?)