Final answer:
The addition of solute will cause the molarity of a solution to increase.
Step-by-step explanation:
The addition of solute (c) will cause the molarity of a solution to increase. When a solute is added to a solvent, it increases the number of moles of solute in the solution without changing the volume of the solvent. This results in a higher concentration of the solute particles in the solution, increasing the molarity of the solution.