Final answer:
The absorption of water by a gummy bear in water is an example of osmosis, which is a passive transport mechanism.
Step-by-step explanation:
When a gummy bear sits in water, and the gummy bear absorbs the water, this process is known as osmosis. Osmosis is a type of passive transport, where water moves across a membrane from an area of lower solute concentration to an area of higher solute concentration, without the use of energy. Therefore, the correct answer is C) Osmosis.