Answer: Concentration
Explanation: Concentration is the amount of a solute that is contained in a given volume of a solution.
Dilution is the addition of solvent to a solution to make the solution less concentrated.
Molarity is the number of moles of a solute per litre of a solution. It is the concentration of a solute in a given volume of a solution.
A solvent is a substance in which other substances dissolve to form a solution.