Question Type:
Match the Reasoning
Stimulus Breakdown:
Computer intelligent → C or SA or LM
AR3000: Not C + Not SA
Therefore, if it's I, it must be LM
Answer Anticipation:
I'm looking for an answer that sets out 3 necessary conditions connected with "or", a premise stating something misses two of them, and a conditional conclusion that says if the sufficient condition is triggered, the third necessary condition must happen.
Correct answer:
(B)
Answer choice analysis:
(A) Conclusion mismatch (and a bit of a premise mismatch). This answer misses the "if it is intelligent" part of the conclusion. The original argument only applies to intelligent computers; this answer applies to all vaccines. Very tempting trap answer, though!
(B) Bingo. This answer differs from (A) in that it has a conditional conclusion ("if it is a commonly used vaccine") that matches with the condition (intelligence) in the stimulus. It matches all the other relevant features, as defined above.
(C) Premise mismatch. This argument has no premises about a specific vaccine lacking two of the necessary conditions, so it doesn't match up with the stimulus' premise about AR3000. Instead, it includes it in the conditional part of the conclusion, which is a mismatch.
(D) Premise/conclusion mismatch. In this argument, the premises rule out only one of the necessary conditions, and the conclusion pits the final two against each other.
(E) Similar to (E), this answer only rules out one of the necessary conditions in the premises, pitting the remaining two against each other in the conclusion.
Takeaway/Pattern:
Match the Reasoning questions with complex conditionals can generally be tackled by identifying relevant features (here, the "or" premise, the "and" premise, and the conditional conclusion) and focusing on them.
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