Question

which of the following best describes osmosis?
the movement of water molecules across a membrane
any transport of molecules that requires energy
movement of large molecule across a membrane
cells engulfing substances to obtain energy

Explanation:

Osmosis is specifically the diffusion of water molecules across a semi - permeable membrane from an area of higher water concentration to an area of lower water concentration. The other options describe different cellular transport processes or energy - related functions.

Answer:

The movement of water molecules across a membrane