Question ID:PT82 S1 Q18 Passage:Doctor:  Angiotensinogen is a protein in human blood. Typically, the higher a person's angiotensinogen levels are, the higher that person's blood pressure is. Disease X usually causes an increase in angiotensinogen levels. Therefore, disease X must be a cause of high blood pressure. Stem:The doctor's argument is most vulnerable to criticism on which one of the following grounds? Correct Answer Choice:CChoice A:It confuses a necessary condition for a sufficient condition. Choice B:It overlooks the possibility that even if a condition causally contributes to a given effect, other factors may fully counteract that effect in the presence of that condition. Choice C:It illicitly infers, solely on the basis of two phenomena being correlated, that one causally contributes to the other. Choice D:It confuses one phenomenon's causing a second with the second phenomenon's causing the first. Choice E:It takes for granted that if one phenomenon often causes a second phenomenon and that second phenomenon often causes a third phenomenon, then the first phenomenon cannot ever be the immediate cause of the third.