Answer;
Active transport
Step-by-step explanation;
Movement of solute from a 0.2% solute concentration solution to a 0.4% solute concentration solution is an example of active transport.
-Active transport is the process by which dissolved molecules move across a cell membrane from a lower to a higher concentration. In active transport, particles move against the concentration gradient - and therefore require an input of energy from the cell.
-During active transport, a protein pump uses energy, in the form of ATP, to move molecules from an area of low concentration to an area of high concentration.