In a solution, solute substances naturally tend to move from areas of higher concentration to areas of lower concentration.
What is the name of this process?
diffusion
passive transport
O equilibrium
osmosis

The process is diffusion

Explanation:

Molecules or substances in solution move by various means. In osmosis, and passive diffusion, water or other substances move across a barrier or membrane.

In diffusion, molecules of a substance, like the solute (dissolved in a solvent) move from regions of high concentration down their concentration gradient, to a region of low concentration.

the answer to your question is b

b brown mice / white sand dunes