Refer to the Figure Below

Multiple Choice

Refer to the figure below. Which property of Volvox internal reproductive cells and external nonreproductive cells can be used as evidence to support current theory about how multicellularity evolved?

A) The internal and external cells share the same genes.
B) The internal and external cells are both photosynthetic.
C) There are more nonreproductive cells than reproductive cells in a colony.
D) Internal cells are stimulated to divide by chemical signaling from external cells.
E) External cells are stimulated to beat their flagella by environmental cues.