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Psychologist: A study of 436 university students found that those who took short naps throughout the day suffered from insomnia more frequently than those who did not. Moreover, people who work on commercial fishing vessels often have irregular sleep patterns that include frequent napping, and they also suffer from insomnia. So it is very likely that napping tends to cause insomnia. The reasoning in the psychologist’s argument is most vulnerable to criticism on the grounds that the argument (A) presumes, without providing justification, that university students suffer from insomnia more frequently than do members of the general population (B) presumes that all instances of insomnia have the same cause (C) fails to provide a scientifically respectable definition for the term “napping” (D) fails to consider the possibility that frequent daytime napping is an effect rather than a cause of insomnia (E) presumes, without providing justification, that there is such a thing as a regular sleep pattern for someone working on a commercial fishing vessel
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Premise1: Study shows that students who took nap frequently causes insomnia. In other words, Short nap causes Insomnia. Premise 2: Similar case with people working on fishing vessel. Concl: Nap cause insomnia
You can solve Cause and Effect problems by considering three of the followings: 1. Somthing else caused X(insomnia). 2. Causality is reversed. ( insomnia caused short nap) 3. The cause and effect is mere conincidence and unlikely to cause next time.
Option D directly states number 2. So D is the answer.
Some hard questions typically hide the three cases by making it complex sentence to understand but if you understand the cause and effect case then you can solve it easily.
#I am trying to get as much kudos as possible to afford free gmat tests. Your kudos will be highly appreciated. Thanks!
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