Answer :
Particles are moving from regions of high concentration to low concentration. Hence, option A is correct.
What is diffusion?
Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration.
Diffusion results from the random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.
This process can neither be stopped nor reversed. It occurs when the medium surrounding the cell has a higher water concentration than the cell.
Hence, option A is correct.
Learn more about the diffusion here:
https://brainly.com/question/24746577
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