The main idea of an essay is usually portrayed in the thesis.
to be as exact as i can it is all of them they all work together to make water good.
The fewer the carbon atoms, the closer it is to being a gas. The only one you have to check out is A which is hexane. You know that gasoline at the pumps has 8 carbons and its a liquid. So B and C are both not gases because they are above 8.
C6 (hexane) is a liquid at room temperature not a gas.
The answer is D. If there is a gas present, it must be C3
Based on this website I would say B. Hope this helps
