One quick note that might help you is that I often find myself falling for answer choices that are sufficient (but not necessary) for necessary assumption questions. They are really attractive! So I try to be on guard against them.
... 'easier' questions, the assumption you need to make in ... that often function as sufficient assumptions (PT 54 S2 ... argument. Supplying a necessary assumption plugs up a potential ... strengthening, or providing a necessary assumption, simply makes it less crappy ...
"PSA questions ask you to identify an assumption that is *almost* sufficient to conclude that the reasoning in the stimulus is valid. Alone, it can't take the argument to the point of complete validity, but it gets most of the way there."
"PSA questions ask you to identify an assumption that is *almost* sufficient to conclude that the reasoning in the stimulus is valid. Alone, it can't take the argument to the point of complete validity, but it gets most of the way there."
... strengthen questions is to thus "BLOCK" any potential assumption from being an assumption ... .com/lesson/cost-effective-intervention-strengthen-question/
Let's ... true, might just block that assumption by saying something like "mitigating ...