The concentration of water molecules is inversely proportional to the:

Explanation

The correct answer is Solute potential. The concentration of water molecules is inversely proportional to solute potential because when solute concentration increases, it lowers the water potential, thus decreasing the concentration of free water molecules. Water moves from areas of higher water potential (lower solute concentration) to areas of lower water potential (higher solute concentration), which is the principle of osmosis. Water potential encompasses solute potential, but it also includes pressure potential, which is not directly related to solute concentration. Therefore, the direct inverse relationship is with solute or osmotic potential.