No need to quote my whole post in your response - it's shown above your message in the thread in any case.
here "lying produces emotional reactions" can happen concurrently as "reactions create responses", and I don't feel that order matters a lot here
The words 'in turn' show that order does, indeed, matter here.
In addition, I also noticed that the comment for C is that "This construction is less successful at clarifying the chain of events because creating seems to refer back to lying; if used as a participial, creating would have to be preceded by a comma."
Is this taken from the explanation in the OG? If so, I warn you that these explanations are full of inconsistencies and confusing explanations; I'm not sure about this myself. I suggest that you look at our explanation in the Navigator app in the Atlas Center.
Besides, I actually feel a bit odd to hear "emotional reactions create unconscious physiological responses". I thought only "an individual" can do that...
The meaning of the sentence is that lie detectors work by picking up small physical clues that are the result of emotional reactions. So, in this context, it's the emotional reactions that create the physiological responses. Of course, we could have a long conversation about the philosophy of causation (a fascinating topic) but that's not necessary to solve this problem.
I've just noticed that this problem is from the Official Guide, i.e. a copyright resource, so I have to remove the problem text, apologies.