Question

osmosis can be described as...
all of these.
only involving the movement of water.
requiring a semipermeable membrane.
moving with the concentration gradient.

Explanation:

Osmosis is the movement of water molecules from an area of higher water concentration (lower solute concentration) to an area of lower water concentration (higher solute concentration) across a semi - permeable membrane. So, it only involves water movement (as it's specifically about water), requires a semi - permeable membrane (as the membrane allows water but not all solutes to pass), and moves with the concentration gradient (from high to low water concentration).

Answer:

all of these.