to see which kind of water to use to know which kind of sugar to use to build a model of the experiment to be able to repeat the experiment
I gave my students this multiple choice question: A student conducted an experiment to see how much sugar could dissolve in water. The student wrote down how many teaspoons of sugar were added to the water. What is the most likely reason the student recorded the information?

Only one answer is correct among these 4 choices:
- to see which kind of water to use
- to know which kind of sugar to use
- to build a model of the experiment
- to be able to repeat the experiment

Could you tell me which one is correct?

to be able to repeat the experiment