Question

the methylene blue diffused in the water. what does this mean? it moved from a high concentration to a low concentration. it moved from a low concentration to a low concentration. it moved from a high concentration to a high concentration. it moved from a low concentration to a high concentration.

Explanation:

Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. Methylene blue diffusing in water follows this principle.

Answer:

It moved from a high concentration to a low concentration.