Answer C) Embargo.
Explanation : An embargo is an official order forbidding trade. Of those dangerous toys.
Hope this helps!
Honestly there really isn't a answer to this
1. The selling of indulgences (claimed to be tickets straight to heaven if you gave money)
2. Greed (heavy taxation, took money that was used for luxuries rather than charity)
3. Abuse of power (lack of separation of church and state)
You forgot your options! But western front was along the borders of France and Belgium (and Luxemburg but this was usually completely in Germany ) on the one side of the front and Germany on the other side of the front