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WHEN IT COMES TO TEENAGERS AND PHYSICAL ACTIVITY, WE KNOW...
A. 9th graders are more active than 12th graders
B. 12th graders are more active than 9th graders
C. 9th and 12th graders are equally active
D. the majority of all teenagers are couch potatoes
A. 9th graders are more active than 12th graders
B. 12th graders are more active than 9th graders
C. 9th and 12th graders are equally active