which solution is unsaturated?
solution A
solution B
solution C
solution D

Solution A
Saturation describes the amount of solute that a solvent has or can be absorbed/dissolved.
Types of Saturation
There are 3 different descriptions that can be used to explain how much solute has been dissolved.
Finding Unsaturated
Out of the 4 options given, only in option A is the amount of solute less than the solubility. In the other options, the amount of solute is either equal to or greater than the solubility.