The correct answer is D. The executive branch and the President of the United States are not entrusted with the power of declaring wars.
Explanation:
In the United States of America, the President is the Commander-in-chief of the Armed Forces, so he has absolute power over them. But this power gets operational in war only under Congress aproval. In other words, the President can command an attack to other country only if the Congress had declared war on it. It is not a power of the executive branch to declare war, but a power that Congress has taken for itself.
In a unitary system of government local offices are subject to the central authority, which in your case the answer would be must follow decisions made by the central government. Hope this helped!
