Answer:
Move in and out of the cell evenly
Step-by-step explanation:
In the passive and active transport, the solute move from lower concentration to higher concentration. In the passive transport cellular energy is not required while in active transport, cellular energy is required.
But, when the concentration of molecules are equal on both sides of a membrane, even though the movement of molecules does not stop and molecules keep their movement in and out of the cell evenly.
Hence, the correct answer is "Move in and out of the cell evenly".