D is the correct answer because osmosis is the movement of a solvent ( mainly water ) from area of higher concentration to that of lower concentration through a semi-permeable membrane ..
D. the process where a selectively permeable membrane allows the movement of water through it ;
The phrase that best describes osmosis is D, as it specifically refers to the movement of water through a selectively permeable membrane. Osmosis involves the diffusion of water from areas of high concentration to areas of low concentration. This process is crucial for maintaining cellular balance in biological systems.
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