Movement of molecules from their higher concentration to their lower concentration.
diffusion
The correct option is A.
Explanation of the correct option:
Explanation of the incorrect options:
Option B :
Osmosis is a process by which the molecules of a solvent pass from a solution of low concentration to a solution of high concentration through a semi-permeable membrane.
Option C:
Active transport is the movement of the molecules or ions of a substance from a region of their lower concentration to a region of their higher concentration. region using energy.
Option D :
Transpiration is the evaporation of water from plants through the leaves while their stomata are open for the passage of CO2 and O2 during photosynthesis.
Final answer: Movement of molecules from their higher concentration to their lower concentration is called diffusion.