Logical ReasoningDifficulty: Hard

PT102 S3 Q22 Explanation

Congenial guests and a plentiful

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsParallel Flaw

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Stimulus

Congenial guests and a plentiful supply of good things to eat and drink will ensure a successful dinner party. Since Sylvia has prepared more than enough to eat and drink and her guests are is certain to be a success.

What this question is testing

Parallel Flaw

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
22.

The pattern of flawed reasoning exhibited by the argument above is most similar to that exhibited by which

Answer choices

  1. Bad Conclusion Match Valid7% picked this

    The right ingredients, properly combined and baked in a reliable oven will always produce a well-baked cake. Since Emily has properly combined the right

    The quickest way to eliminate this is to glance at the conclusion, the very last claim and see that it's a conditional claim. The original conclusion wasn't conditional, so we know this will be wrong. This says, Right Properly Baked in well baked ingredients + combined + Reliable O ? cake We know she has the first two things, and the conclusion says, if she has 3rd thing, then success This is not only a structural mismatch, it's also a valid argument.

  2. Weak Premise Match Bad Conclusion Match2% picked this

    If corn is baked with its husks on, the resulting dish will always be moist and sweet. Since George wishes to ensure that the

    The conditional has an "and" in the outcome, whereas the original argument had the "and" in the trigger. That would already make me bail and only revisit this if everything else was bad. Baked w/ husks ? Moist and Sweet To even have a chance at being a match for the original, we would need a fact that almost triggers "baked with husks", and then a conclusion that says "thus, moist and sweet". The conclusion here is "baked with husks", so this one is hopeless.

  3. Valid42% picked this

    Making pie dough using ice water and thoroughly chilling the dough before rolling it out will ensure a flaky crust. Andrew thoroughly chilled his

    This has a conditional premise with an "and" on the left. This says that if you meet two criteria 1. use ice water to make dough 2. chill the dough before rolling it then you'll definitely get a flaky crust. Andrew did both 1 and 2, so it is valid to conclude that he'll get a flaky crust.

  4. Correct47% picked this

    If soup is made with a well-seasoned meat stock and fresh ingredients, it will always be welcome at dinner. Since to his meat stock

    Why this is right

    This has a conditional premise with an "and" in the trigger. Well-seasoned Fresh Welcome meat stock + ingredients ? at dinner The premises almost establish the two conditions: - he's got only fresh ingredients - he's got meat stock But is it well-seasoned ? ! ? !

    Skill tested: Parallel Flaw · how this choice captures the argument's function is the move to repeat next time.

  5. Bad Conclusion/Premise Match2% picked this

    Fresh greens, carefully washed and served with a light dressing, always produce a refreshing salad. Since Tisha has developed an exceptionally light dressing but

    This lays out a rule with 3 things that together trigger a refreshing salad. - fresh greens - carefully washed - light dressing We would want the argument to almost establish all three and then conclude "refreshing salad". Instead it's saying that one of the things won't happen and concluding that "refreshing salad" won't happen. This is flawed, but it's not the same flaw and not a structural match.

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