ANSWER is Hypotonic SOLUTION. In the Hypotonic solution, the cell will gain water and will SWELL up.The hypotonic solution has lower OSMOTIC pressure.It also has more water than another solution. Isotonic Solution contains an equal concentration of solutes.Due to Isotonic solution, cell neither shrink nor swell up.Hypertonic Solution contains a higher concentration of solutes.It is the opposite of the Hypotonic solution.Acidic Solution has a high concentration of HYDROGEN ions. Shrink Balanced Swell