Answer:
The correct answer will be- the molecules move from high concentration to low concentration.
Explanation:
Diffusion represents the movement of solute particles that is ions or molecules. The movement is driven by the concentration gradient that is from the higher concentration to lower concentration.
The diffusion can be categorized into two types: simple and facilitated diffusion. In biology, diffusion plays an important role as the important solute particles move into and out of the cell through this process.
Thus, the molecules move from high concentration to low concentration is the correct answer.
