The solution can be made more concentrated by;
A.) increase the amount of solute
C.) decrease the amount of solvent
Two ways to make a solution more concentrated
Adding more solute—the material being dissolved—to the solvent—the substance doing the dissolving—is the simplest method for raising a solution's concentration.
Reducing the solvent while maintaining a constant solute concentration is another way to boost concentration. Evaporation or any other method of eliminating solvent from the solution can accomplish this. The solute concentration in the residual solution increases as the solvent content drops.