The answers to these kinds of questions can be consistently predictable if your conditional logic is on the money. Once symbolized, you look at the conclusion and figure out which additional conditional statement is needed, in addition to the given premises, to guarantee the conclusion.
It's usually modeled something like this:
A--> B
C --> D
Conclusion:
A --> D
In order to do guarantee that A-->D, what can we add to the above evidence? What connection does the evidence cry out for? B-->C! That would complete the circuit in the most elementary way possible. On an easier problem, the answer will look something like B->C. On a more difficult problem, the answer will be the contrapositive, ~C-->~B.
I find it confusing sometimes to use only letters when I symbolize tough logical reasoning arguments, so I often use words or phrases.
Here's how I think about this one.
1st sentence: Hmm... The word "at" is kinda weird here. Is it an "and" or an "or"? Let's leave it aside for a second and look at the next one.
2nd sentence: This one is more clear.
~products that attract --> Bankrupt
Conclusion:
~Best quality & ~Lowest price -->Bankrupt
Hmm. The conclusion seems to be about two separate, absolute categories: BEST and lowEST. I don't think this really matches the first sentence, which is more of a spectrum of the two categories mixed together: best AT lowest.
I'm gonna ignore that for a moment and see if there's an easy way to go from the 2nd premise to the conclusion. The argument kinda looks like this now:
~C -->D
therefore: ~A and ~B --> D
Now, if I want to start and "~A and ~B" and end up at "D" using the one given piece of evidence, which puzzle piece do I need to add?
Well, starting at "~A and ~B," I can go through "~C" and that would lead directly to the desired "D." Let's try that and see if there's a good match. We'll go to the choices and look for either
~A and ~B --> ~C,
or the contrapositive, C --> A or B
Thinking in the argument's terms, if we know that "~highest quality & ~lowest price --> ~attracting consumers," we guarantee the conclusion, so this is likely to be the answer.
A) Highest quality --> ~Lowest price. Not what we need!
B) ~Highest quality and ~Lowest price --> ~attract. Perfect match!
C) Highest quality or Lowest price --> ~Bankrupt
D) not even close
E) not even close
Lemme know if that clears things up.
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