We are currently reading this in class as well.
Forgive me if I'm wrong, but I believe that the answer is, "They see Dr. Mengele deciding who will live and who will die."
The last step is D, because after you find it and look into it you need to do it so that you know it is right.
"issuing a loud, angry complaint about the meal you just had in a restaurant" is the answer :)
Answer:
The root word is "Correct"
Explanation:
Hope this helps :)