Question ID:PT31 S2 Q6 Passage:It is proposed to allow the sale, without prescription, of a medication that physicians currently prescribe to treat the common ear inflammation called "swimmer's ear."  The principal objection is that most people lack the expertise for proper self-diagnosis and might not seek medical help for more serious conditions in the mistaken belief that they have swimmer's ear.  Yet in a recent study, of 1,000 people who suspected that they had swimmer's ear, 84 percent had made a correct diagnosis‚ a slightly better accuracy rate than physicians have in diagnosing swimmer's ear.  Thus, clearly, most people can diagnose swimmer's ear in themselves without ever having to consult a physician. Stem:Which one of the following, if true, most undermines the conclusion? Correct Answer Choice:CChoice A:Cases in which swimmer's ear progresses to more serious infections are very rare. Choice B:Most of those who suspected incorrectly that they had swimmer's ear also believed that they had other ailments that in fact they did not have. Choice C:Most of the people who diagnosed themselves correctly had been treated by a physician for a prior occurrence of swimmer's ear. Choice D:Physicians who specialize in ear diseases are generally able to provide more accurate diagnoses than those provided by general practitioners. Choice E:For many people who develop swimmer's ear, the condition disappears without medical or pharmaceutical intervention.