Answer:
I think that the answer is B. To develop plans or post-war Japan.
Explanation:
It appears to be the only one that applies to the Potsdam Conference
They both have multiple different ethnic groups and cultures within the union.
It was primarily the "b. formation of the Vietcong in Vietnam" that led the Truman administration to expand the containment doctrine to include Asia, since this was seen as a threat to democratic principles in the west as well.
