When the concentration of molecules on both sides of a membrane is the SAME, the solution%0D%0A a%0D%0Ais hypotonic.%0D%0A b%0D%0Ais hypertonic.%0D%0A c%0D%0Ahas reached equilibrium.%0D%0A d%0D%0Amoves from an area of higher concentration to an area of lower concentration.
