Question

Which methods could be used to dilute a solution of sodium chloride (NaCl)? Select all that apply. Add more NaCl to the solution. Add more water to the solution. Remove a small amount of the solution and mix it with water. Heat the solution to evaporate some of the water.

Answer 1

Only select:
2)Add more water to the solution.
3)Remove a small amount of the solution and mix it with water.

Answer 2

Answers are: Add more water to the solution and remove a small amount of the solution and mix it with water.

Solution is homogeneous mixture composed of two or more substances.
In aqueous solution, solvent is water and solute (in this example sodium chloride) is a substance dissolved in water.
Adding more solvent will dilute a solution and adding more solute will make solution more concentrated.