The correct answer is D) None of the above.
The President can't appoint himself to office as the President of the United States, decide to place a tax on goods without the approval of the other branches of government, neither has the power to declare war.
According to Article II of the United States Constitution, the President is the Commander in Chief of the Armed Forces, grant pardons as well as reprives for federal offenses, receive ambassadors and conduct diplomacy, write executive orders, direct the executive branch, and appoint the officials of his cabinet.
To declare war, he needs the approval of Congress. To pass legislation, he works with Congress.
