Free GMAT Test Questions

Question 1 of 1
ID: GMAT-CR-1
Section: Verbal Reasoning - Critical Reasoning
Topic: Weaken the Argument
Difficulty level: Easy

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A national health survey conducted in 2005 found that thirty-three percent of all adults in the United States were obese. Therefore, out of the country's total adult population of 234 million in 2010, it can be reasonably estimated that about 78 million were obese.

Which of the following, if true, would most weaken the conclusion drawn by the author?

AThe dietary habits of an individual remain stable over time and are notoriously difficult to change.
BThe prevalence of obesity in the United States flatlined between 2005 and 2010.
CThe prevalence of obesity in the United States among children aged 0-5 years increased from 14 percent in 2005 to 16 percent in 2010.
DThe survey also found that among the adults in the United States, increased per capita consumption of processed foods was strongly correlated with increased prevalence of obesity, and projected a 20 percent increase in the adult per capita consumption of processed foods from 2005 to 2010.
EWhile the population of the United States increased by 10 million from 2005 to 2010, the percentage of adults dropped from seventy-nine percent to seventy-seven percent.