A student needs to prepare a 0.5 M solution of NaCl using a volumetric flask. Which steps should they follow to ensure the solution is prepared accurately?

• A. Dissolve NaCl in excess water and then pour into the volumetric flask.
• B. Add NaCl directly to the volumetric flask and fill to the mark with water.
• C. Dissolve the NaCl in a small amount of water, transfer to the volumetric flask, and fill to the mark with water.
• D. Measure NaCl using a beaker and add to the volumetric flask.

Answer: (C)