Quick question — In E, it says "inversely proportional." Should we interpret this to mean simply that "if one goes up, the other goes down"? For example, what if oxygen changes cause phosphorus to change exponentially? Mathematically, that wouldn’t be considered an inversely proportional

When you spend 200%+ the recommended time, only to find out that it is a tier-1 level question...

I find D very tempting.

The author made a general conclusion based on observations from a shopping mall parking lot, and D is saying this conclusion is not solid because shopping mall parking lots are unrepresentative of parking spaces in general. Doesn't that sound like weakening the support bewteen the premise and conclusion? It is quite hard for me now to see how D is irrelevant.

Could someone please help clarify this for me?