D
Advocate: A study of people who had recently recovered from colds found that people who took cold medicine for their colds reported more severe symptoms than those people who did not take cold medicine. Ttherefore, taking cold medicine is clearly counterproductive. The reasoning in the advocate's argument is flawed because the argument
A: treats something as true simply because most people believe it to be true
B: treats some people as experts in an area in which there is no reason to take them to be reliable sources of information
C: rests on a confusion between what is required for a particular outcome and what is sufficient to cause that outcome
D: confuses what is likely the cause of something for an effect of that thing