Which of the following statements about osmosis is correct?

• A. Osmosis requires ATP to move water molecules against their concentration gradient across a membrane.
• B. Osmosis is the net movement of solute molecules across a selectively permeable membrane from higher solute concentration to lower solute concentration.
• C. Osmosis is the net movement of water across a selectively permeable membrane from lower solute concentration to higher solute concentration.
• D. Osmosis occurs only when the membrane is permeable to solutes but impermeable to water.

Answer: (C)