Concept:Osmosis is the movement of water molecules through a semi-permeable membrane from a dilute solution to a more concentrated solution.Explanation:Option D shows water moving from the soil into root hair cells through a semi-permeable membrane.This movement of water is osmosis.Options A and C are examples of diffusion.Option B involves absorption of digested food substances mainly by diffusion or active transport, not osmosis.Answer:D. Absorption of water into the root hairs.