Answer:
C. Hydrogen bonding is stronger in water than in acetone
Step-by-step explanation:
When the chemist investigates properties of various substances. The inference of the investigation is that "Hydrogen bonding is stronger in water than in acetone"
The reason Option C is the correct answer is because it gives an insight that an experiment was carried out in the course of the investigation.
Then after such an experiment, an inference was made.
Other options are correct which shows the properties of the elements but they don't give us insight on the experiment carried out.
Therefore, option C is the correct answer.