Question

after which action would the concentration of a solution remain constant? (1 point) evaporating water from the container removing solution from the container adding solute to the solution adding water to the solution

Explanation:

Concentration is defined as $\frac{\text{amount of solute}}{\text{amount of solution}}$. Evaporating water or adding water changes the total solution amount, altering concentration. Adding solute increases the solute amount, changing concentration. Removing a portion of the solution takes out solute and solvent in the same proportion as the original solution, so concentration stays the same.

Answer:

removing solution from the container