Answer:
C. Ricardo's theory of comparative advantage
Step-by-step explanation:
Comparative advantage -
It is a classical theory , given by Ricardo ,
According to this theory ,
The agents have an advantage over the others by producing a particular good when they have the capability to produce the good at a lower autarky price , is known as the theory of comparative advantage .
hence , same case is shown in the question , where Palladia's decides to buy wheat from Rhodia .
hence , the correct term fro the given statement is C. Ricardo's theory of comparative advantage .