because to conduct an experiment you would have to go through the process more than once to compare them to find the best soulution or get the best results
In short, there is no “one way” to conduct an experiment.
There are multiple types of experiments, one of the few things that they have in common is that they all provide the scientist with data. For a specific experiment, or question, the most reliable answer is one that has been tested multiple times. Meaning that a test needs to be conducted more than 2 times to be completely finished.
The correct answer is C. Colligative properties only depend upon the number of solute particles in a solution but not on the identity or nature of the solute and solvent particles. I hope this anwers your question.