Artistic success as an actor is directly dependent on how well an actor has developed his craft. This has been demonstrated by the discovery of a positive relationship between the number of classes taken by an actor and the number of professional productions in which the actor has appeared in the past two years.
Each of the following, if true, cast doubt on the author's argument about artistic success for actors EXCEPT:
Music Industry executives have claimed that online file-sharing networks are significantly hurting their business because potential consumers are getting music for free that they would otherwise purchase. However, after file-sharing networks started to become popular, CD sales actually increased.
Which of the following, if true, best explains the apparent contradictions described above?
Parents of high school students argue that poor attendance is the result of poor motivation. If students' attitudes improve, regular attendance will result. The administration, they believe, should concentrate less on making stricter attendance policies and more increasing students' learning.
Which of the following, if true, would most effectively weaken the parents' argument?
A study of children's television-watching habits by the federal Department of Education found that children aged 7-10 who watched more than 25 hours of television per week performed worse in school than children of the same age who watched fewer than 25 hours of television per week. Therefore, parents of children aged 7-10 should prohibit their children from watching more than 25 hours of television per week.
Which of the following, if true, would be best to strengthen the argument above?