Statistician: A financial magazine claimed that its
survey of its subscribers showed that North
Americans are more concerned about their
personal finances than about politics. One
question was: "Which do you think about
more: politics or the joy of earning money?"
This question is clearly biased. Also, the readers
of the magazine are a self-selecting sample.
Thus, there is reason to be skeptical about the
conclusion drawn in the magazine's survey.
Each of the following, if true, would strengthen the
statistician's argument EXCEPT:

(A) The credibility of the magazine has been called
into question on a number of occasions.
(B) The conclusions drawn in most magazine
surveys have eventually been disproved.
(C) Other surveys suggest that North Americans are
just as concerned about politics as they are
about finances.
(D) There is reason to be skeptical about the results
of surveys that are biased and unrepresentative.
(E) Other surveys suggest that North Americans are
concerned not only with politics and finances, but also with social issues.

OA after discussion