Osmosis is a diffusion process that moves through the membrane from higher to lower concentration.
a. molecules
b. salt
c. water
d. nutrients

The correct answer would be c. water

Osmosis refers to the passive movement of water across the semi-permeable region from the region of high concentration of water to the region of low concentration of water.

Alternatively, it can be defined as the movement of water from hypotonic solution to the hypertonic solution across the semi-permeable region.