Answer: Option (b) is the correct answer.
Explanation:
When small amount of solute is added to a solvent and if it readily dissolves then this type of solution is known as an unsaturated solution.
For example, teaspoon of a sugar is added to a glass of tea which is then stirred until no more crystals can be seen. So, this solution is unsaturated.
On the other hand, a saturated solution is defined as a solution which contains maximum amount of solute.
Thus, we can conclude that after the first teaspoon of sugar is added, the solution is unsaturated.
