A cell is placed in a hypotonic solution. What is the role of the concentration gradient in the movement of water into the cell?

• A. The concentration gradient reverses, causing solutes to move into the cell.
• B. The concentration gradient has no effect on water movement in passive transport.
• C. The concentration gradient causes water to move into the cell to achieve equilibrium.
• D. The concentration gradient causes water to move out of the cell.

Answer: (C)