October 1991 LSAT Section 4 Question 6

Although this bottle is labeled "vinegar," no fizzing occurred when some of the liquid in it was added to powder from...

EmilyMarieMenendez on August 20, 2018

Wording

Not sure if I am interpreting this correctly. I wanted to choose B so badly, however, I was turned away from be since it said that the reasoning "Fails to exclude" when I thought the flaw was that it was actively excluding an alternative explanation. Any ideas what I misinterpreted here? Thanks!

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EmilyMarieMenendez on August 20, 2018

***Correction***
Answer choice B

Emil-Kunkin on August 25 at 09:06PM

To actively exclude the possibility that the other one was mislabeled would have actually made this argument correct. The author would have had to actually tell us that it was not the case that the other one was mislabeled, which they did not do here.