The best glassware to prepare a 50 mL NaCl solution would be a beaker.
Solution preparation
In order to prepare the NaCl solution;
- a measured amount of NaCl is poured into the beaker
- a measuring cylinder is used to measure 50 mL of distilled water and poured into the beaker containing NaCl
- a stirrer is then used to stir the mixture until all the NaCl dissolves
More on solution preparation can be found here: https://brainly.com/question/20910830