Here's why:

* Solute: The substance dissolved in a solution.

* Concentration: The amount of solute dissolved in a given volume of solvent.

* Hypotonic: A solution with a lower solute concentration compared to another solution.

Think of it like this: If you have two solutions, one with a lot of sugar (high solute concentration) and one with a little sugar (low solute concentration), the solution with less sugar is hypotonic relative to the solution with more sugar.