medium · GMAT Verbal
Argument: A recent study observed that children who participate in organized sports for at least four hours a week have higher average grades than those who do not. Therefore, participation in organized sports improves academic performance.
Which of the following is an unstated assumption required by the argument?
- Organized sports provide physical benefits that are not available through unorganized play.
- Children with higher academic performance are not naturally more likely to participate in organized sports.
- The teachers of children who play sports do not grade them more leniently than they grade other students.
- Academic performance is the primary factor parents consider when enrolling children in sports.
- Children who participate in organized sports devote at least as much time to studying as children who do not participate.
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