Question

osmosis involves:
a differentially permeable membrane
a difference in water concentratrion
diffusion
all of the above

Explanation:

Osmosis is the movement of water molecules from an area of higher water concentration to an area of lower water concentration through a differentially permeable membrane. This process is a type of diffusion (specifically for water). So, it involves a differentially permeable membrane, a difference in water concentration, and diffusion.

Answer:

all of the above