weird question phases passage 4

[echoyjeff222]

One question asked

25. For both Material T and Material C, which phase can
coexist with the other three at some point?
A. Solid A
B. Solid B
C. Liquid
D. Gas

I initially interpreted the question to ask "which one has a "quadruple" point" which would in fact be none. I then thought it was just gas, since the passage mentioned there was some vapor around in each phase.

However, it seems like the question was instead asking "which phase 'touches' another phase at at least one point, " which means not necessarily a SINGLE point, but any point at all. Is this correct? The question seems badly worded.

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[BerkReviewTeach]

Your rewording is correct, but the original wording is also correct, albeit with ambiguity. You are correct that the phrase "at some point" is not the same as "at some single point", and that is the saving grace of the original wording. It should probably be reworded though.