(D) says, "overlooks the possibility that people can act in a way that is contrary to their expressed interest"
In looking at the argument, the most important word is "intended." We know that the movie led to antisocial behavior; however, the conclusion is that the movie intended to lead to antisocial behavior. Thus, the argument is drawing a false equivalence between what the movie actually did (lead to antisocial behavior) and what the movie intended to do (prevent antisocial behavior).
The problem with (D) is that Jenkins is the person who's discussing the director's interest. However, we don't know anything about what the director has or has not expressed, so we can get rid of this choice.
(E) says, "concludes from the mere fact that an action had a certain effect that the effect was intended by the person who performed the action"
(E) looks great because we know that the movie resulted in antisocial behavior. The argument mistakenly concludes that that effect must have been intended by the movie director, which is a false equivalency. Thus, (E) is the correct answer.
Does this make sense? Let us know if you have any other questions!