GMAT Reading Comprehension (RC) | Re: Symptoms of Parkinson’s Disease, such as tremors

1.
This is a general question asking about the function of the third paragraph. To answer this question, it is helpful to examine the general role that each paragraph in
the passage plays. The first paragraph introduces the problem: researchers have not known enough about neurons to effectively treat the symptoms of Parkinson’s Disease. The second paragraph introduces new research in yeast cells. The third paragraph makes the connection between this research and neurons affected by Parkinson’s
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