GMAT Critical Reasoning (CR) | Re: *700* Doctor: Research shows that adolescents who play video

"Curb" means restrain or control, not "eradicate". Your point could be valid if the wording were asfollows:

Federal legislation that prohibits the sale of video games to minors would help curb eradicate this painful wrist condition among adolescents.

Even if there were other reasons for the syndrome, restricting video games would still curb or restrain the syndrome (among those who play videos games).
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