GMAT Practice Question Set #29 (Question 85-87)

Critical Reasoning Question #87: Infant Weight  
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The average normal infant born in the United States weighs between twelve and fourteen pounds at the age of three months. Therefore, if a three-month-old child weighs only ten pounds, its weight gain has been below the United States average.

Which of the following indicates a flaw in the reasoning above?


Weight is only one measure of normal infant development.


Some three-month-old children weigh as much as seventeen pounds.


It is possible for a normal child to weigh ten pounds at birth.


The phrase below average does not necessarily mean insufficient.


Average weight gain is not the same as average weight.

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