Question

which homeostatic process is characterized by the diffusion of only water molecules?
active transport
osmosis
passive transport
dynamic equilibrium

Explanation:

Osmosis is the diffusion of water molecules across a semi - permeable membrane from an area of higher water potential to an area of lower water potential. Passive transport includes diffusion and osmosis but is a broader term. Active transport requires energy and is not related to just water - molecule diffusion. Dynamic equilibrium is a state, not a transport process focused on water molecule diffusion.

Answer:

osmosis