Which role best describes the presidents duties as head of the executive branch of government

The president is the chief executive officer of the United States.

Article II of the Constitution outlines the powers of the Executive Branch headed by the President.

The United States Constitution begins Article II (in Section 1), saying:  "The Executive Power shall be vested in a President of the United States of America."

Then, in Section 2, Article II of the Constitution goes on to lay out powers  of the Executive Branch, with statements like these:

panem is a communist totalitarian dictatorship where all the resources and how they are allocated belongs to the capitol. the districts exist only to provide goods and services for the capital and most of the citizens live in poverty. it is a police state where the "peacekeepers" use force and threats to keep the people under control. dissent is outlawed and those who disobey the law are executed, flogged, or turned into avoxes. the games are another means in which the ruling elite in the capitol exert their power over the districts. when reading the books i drew parallels between panem and the soviet union and north korea. in no way is panem capitalist. the people in the capitol are wealthy but the majority of them are involved in the government somehow. it was the same way in the former soviet union where bigwigs in the communist party and high ranking government officials were given access to goods, services, medical treatments not available to the general public. if you think panem has a capitalist economy you need to brush up on your economics.