The correct option is "the executive branch".
As the head of the state, the US President is in charge of the executive branch of the United States federal government. Not only is the President of the United States the head of state but also the Commander in Chief of the U.S. armed forces.The Constitution of the United States establishes three separate branches of government: the executive, the legislative and the judicial. The Constitution allows the executive branch to control the implementation and administration of all laws passed by the legislative branch in the Congress in order to prevent any abuse in power.