Answer:
A. the World Trade Organization
C. the North Atlantic Treaty Organization
Explanation:
The World Trade Organization and the North Atlantic Treaty Organization (NATO) are both organizations that are run by the governments of their member states.
As a result, any government that is part of both organizations and can nominate a civil servant from their country to lead which means that the organizations could be led by a U.S. government official.
The other two are international nongovernmental organizations so a civil servant from the U.S. government cannot lead them.
