Wind power and tidal power both use a force while others use heat and light.
Carbohydrates have alot of fiber and protein,which our bodies can then convert into energy to move about,and do different things.
The answer would be D, because that is the only logical one, and selling 15 cups is not a hypothesis, it is a fact.
D is the one hypothesizing that he will make a profit.
Hope this helps and have a nice day:)