C
Below is a question with multiple-choice answers. Choose the correct option based on your reasoning.

### Question:
Which characteristic of a volvox colony makes it more like a multicellular organism than a simple cluster of unicellular organisms?

### Choices:
A. The cells in the colony respond to stimuli separately.
B. The cells in the colony are arranged in a specific shape.
C. Some cells in the colony are specialized for reproduction.
D. Cells in the colony are connected by strands of cytoplasm.

### Answer:
