Final answer:
Foreign affairs is primarily the duty of the federal government, not state governments. The President and the Secretary of State take the lead in conducting foreign policy in the U.S., with Congress sharing power and providing oversight.
Step-by-step explanation:
The statement "Foreign affairs is the duty of state government" is B. False. Foreign policy is primarily the responsibility of the federal government, specifically the Executive Branch, including the President and the Secretary of State. This is evident in the U.S. where the President, with the assistance of the Secretary of State, conducts relations with foreign nations, appoints ambassadors, and meets with foreign officials. Furthermore, foreign policy powers are shared between the President and Congress, with the latter having oversight responsibilities and the authority to confirm appointments and ratify treaties.