Here's a problem to solve: A researcher examines a marine organism that is the size of an average human hand. Without more information, which statement about the organism is most likely accurate?

Among the 4 following options, which is the correct answer?

- A: It is mobile.
 
- B: It has organ systems.
 
- C: It is made of many cells.
 
- D: It makes its own food.
 