That would be the waxing and waning crescents.
Hope it helps!
B. sublimation is the answer.
Explanation:
Distillation is defined as a process in which two liquids with a temperature difference less than 25^{o}C are boiled together. As a result, liquid with low boiling point vaporizes and collected in a separate container.
Hence, separation of both the liquids take place.
When we carry out slow distillation then both vaporization and condensation takes place simultaneously more effectively. Hence, an equilibrium is maintained.
And, when we do fast distillation then vapors do not condense as quickly as desired. Hence, liquids will not separate out easily.
The way scientists form a hypothesis is there is something called the scientific method. You established your question or problem first. Then you research it. You take your hypothesis, theory, or prediction of what is going to happen from your research.