size of the cells of the organism what the organism eats how many types of cells are in the organism how fast the organism grows
A scientist is trying to decide whether an organism is unicellular or multicellular. Which information would help the scientist most to make her decision?

Options:
- size of the cells of the organism
- what the organism eats
- how many types of cells are in the organism
- how fast the organism grows

how many types of cells are in the organism