Answer:
D) absolute advantage
Step-by-step explanation:
Absolute advantage is the ability of a country to make available a particular good or service much affordably than any other nation.
In application to the given scenario, since no other nation has deposits of Yuksporite, Russia has an absolute advantage in this mineral since no other nation will be able to provide Yuksporite cheaper, because they must have bought from Russia before they are able to supply to any other country and in that case they will sell at a margin