If You Can See Me, My Presence Is Not Assumed
Recall the cardinal rule of assumptions: they are unstated. If a question is quoting a portion of text to you, that portion is stated. It cannot, therefore, be an assumption.
These questions that ask you to identify the function or role of a phrase or statement are pretty efficient to answer if you know what you’re looking for. If you identify the quoted phrase as a conclusion, you can knock out any answer choice that calls it premise, no matter how accurate anything else in that answer choice is. Likewise, if it’s a premise, you can get rid of any answer choice that calls it a conclusion.
But regardless of its role, you can always get rid of “assumption” answer choices for one reason: since it’s quoted, that’s impossible.
Check out PT64, S1, Q14 for an example.