The correct answer is - A. Mediterranean polyculture.
Western Europe is a region that has mild summers, lot of precipitation, cold and snowy winters, so it is not a region that enables the conditions for the development of the Mediterranean polycuture agricultural type.
The Mediterranean polyculture is thriving into a region that is pretty warm, has a dry season, lower than average precipitation, lot of Sun, and mild winters. The cultures that are farmed in this region can not survive in Western Europe, thus they can not be farmed.
Some of the cultures farmed in the Mediterranean polyculture are the wine trees, pomegranates, olives, oranges, artichokes...