M: It is almost impossible to find a person between the ages of 85 and 90 who primarily uses the left hand.Q: Seventy...

RyanSpencer April 24, 2019

Question Stem

So the question stem is asking, what is the conclusion to which Qs response weakens? Correct? We are simply looking for the conclusion that could be drawn from Ms statement?

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Ravi May 1, 2019

@RyanSpencer, that's correct. Based on M's reference of the age of the predominantly right-handed people, one may try to conclude that being a right-hander confers a survival advantage because so many people 85-90 years old are right-handed, and they've all survived a while. Q's point conuters this conclusion, and this is exactly what (A) picks up on.

Does this make sense? Let us know if you have any more questions!