Hypnagogic happens as a result of sleep deprivation, caffeine intake or stress. It usually happens during a transition between wakefulness and sleep
The properties of matter which would help her to determine if the two substances are the same is:
<h3>Solubility</h3>
This refers to the ability of a liquid to dissolve into a given solvent at a particular temperature.
With this in mind, we can see that this would help the student to find out if the two liquids are the same.
Therefore,, the correct answer is option B
Read more about solubility here;
brainly.com/question/23946616
They are more free as they used to be affected by communism :)