Three years ago, a sports association announced its concern that an increase in the popularity of computer games would lead to a drop in the amount of time that children spent playing tennis. Clearly this prediction was inaccurate since a survey about kids activities at schools shows that many children who are spending more time playing computer games than before have not cut down on their tennis.
Which of the following would it be most useful to establish in order to evaluate the argument?
(a) Whether there is evidence of other sports or physical activities not being affected by the increased popularity of computer games
(b) Whether the children that participated in the survey would testify to the same behavior after school hours
(c) Whether sports associations are interested in the well-being of children or simply see them for their value as budding consumers
(d) Whether there is any support for the suggestion of a direct relation between computer games and violence in children
(e) Whether there were similar surveys that were conducted on adults as well