Answer:
The correct answer is letter "D": is immune from review under the act of state doctrine.
Explanation:
The Act of State Doctrine states that every sovereign state is bound to respect the independence of every other sovereign state, and the courts will not sit in judgment of another government's acts done within its own territory. In the case, as Argentina is no jurisdiction of the United States, the U.S. citizens and businesses who had accounts in the South American cannot rely on U.S. policies to resolve their problems even if the Argentinian government has violated international law.