Which of the following is a feature of osmosis?

Osmosis is a biological and physical process that specifically refers to the movement of water across a selectively permeable membrane. The primary feature of osmosis is its goal to achieve an equilibrium in solute concentration on both sides of the membrane. When there is a difference in solute concentration, water moves from an area of lower solute concentration to an area of higher solute concentration. This movement continues until the concentrations are equal, thus promoting equal solute concentrations.

In contrast, the other choices present concepts that do not align with the fundamental characteristics of osmosis. Osmosis does not require energy; it is a passive process driven by concentration gradients. It also specifically involves the movement of water rather than solutes, and while it occurs through selectively permeable membranes that allow water to pass, it does not happen in wholly non-permeable membranes, as those do not permit the movement of water at all.