Confusion on "Presuppose" in Argument Part Questions

JoJo_the_OjOj

What does "presuppose" ACTUALLY mean in an AP question's answer choice?

I understand that presupposing something is similar to assuming something. But I still keep messing up on AP questions where the answer choices include the word "presuppose." I trick myself into believing that the argument has presupposed something!

For example, PT27.S2.Q17 (the "A Stable Society" question), I picked E :'(

Does anybody have any examples of when an argument really did presuppose something? Are answer choices in AP questions that mention "presupposing" always wrong?

Any advice would be greatly appreciated.

maco4538

In a conditional sense, "presuppose" is a necessary condition indicator. So, to presuppose something is to assume that something must be true based on another premise. To your other question, I am not sure that it would be "automatically" wrong. I would say that most arguments on the LSAT are to some degree presupposed.