The corn syrup is mostly sugar. It has a lower concentration of water. A small amount of water moved into the egg because the distilled water had a slightly lower concentration of solute molecules than inside the egg. The size of the egg changed to small, due to corn syrup being hypotonic.
The reason for Ovum being the correct answer, is because the Ovum is in the lower plant structure, and is the structure that is needed to be fertilized to reproduce gametes.
