I am really struggling trying to work out when words such as “any” or “all” should be applied as a distinguishing factor. The economics professor was simply talking about two pizza parlour's - why do we assume that is “any company”? Why isn’t it just some, or at least one etc.

The problem I had with this one is that I didn’t want to select any answer with “some” in it - my reasoning was that some can mean all but the stimulus just mentioned most..could I get some clarification on when I should consider some all in this context?

Answer C… fell right into it.