Question ID:PT88 S4 Q24 Passage:People who have experienced a traumatic event but who did not subsequently develop post-traumatic stress disorder (PTSD) tend to produce higher levels of the hormone cortisol when exposed to stress than do people who have not experienced traumatic events. This suggests that experiencing a traumatic event can affect how much cortisol one produces in response to stress. Stem:Which one of the following, if true, most weakens the argument above? Correct Answer Choice:BChoice A:Medical conditions sometimes affect how much cortisol people who have not experienced a traumatic event produce in response to stress. Choice B:Producing more cortisol than average in response to stress helps prevent a person from developing PTSD as a result of experiencing a traumatic event. Choice C:People experiencing a traumatic event produce more cortisol than they would under less severe instances of stress. Choice D:Many effective treatments for PTSD are designed to reduce how much cortisol those with PTSD produce when exposed to stress. Choice E:Experiencing a traumatic event can damage the gland that produces cortisol, resulting in that gland producing more cortisol.