Question ID:PT33 S3 Q12 Passage:Some people claim that the reason herbs are not prescribed as drugs by licensed physicians is that the medical effectiveness of herbs is seriously in doubt.  No drug can be offered for sale, however, unless it has regulatory-agency approval for medicinal use in specific illnesses or conditions.  It costs about $200 million to get regulatory-agency approval for a drug, and only the holder of a patent can expect to recover such large expenses.  Although methods of extracting particular substances from herbs can be patented, herbs themselves and their medicinal uses cannot be.  Therefore, under the current system licensed physicians cannot recommend the medicinal use of herbs. Stem:Which one of the following most accurately describes the argumentative technique used in the argument? Correct Answer Choice:AChoice A:questioning a claim about why something is the case by supplying an alternative explanation Choice B:attacking the validity of the data on which a competing claim is based Choice C:revealing an inconsistency in the reasoning used to develop an opposing position Choice D:identifying all plausible explanations for why something is the case and arguing that all but one of them can be eliminated Choice E:testing a theory by determining the degree to which a specific situation conforms to the predictions of that theory