Which statement correctly differentiates osmosis from diffusion?

• A. Osmosis occurs only in plant cells, while diffusion occurs in all cells.
• B. Osmosis requires energy, while diffusion does not.
• C. Osmosis involves the movement of solutes, while diffusion involves the movement of water.
• D. Osmosis is the movement of water across a semipermeable membrane, while diffusion is the movement of solutes.

Answer: (D)