Recall that matter cannot move without energy. What is the energy source that moves the red dye? What is the source that moves the blue dye?

Answer 1

The energy source that moves the red dye is likely some form of external force or energy input, such as a person stirring the liquid or a mechanical mixer. On the other hand, the energy source that moves the blue dye could be diffusion, where the dye particles move from an area of higher concentration to an area of lower concentration.