Answer:
President is the right answer.
Step-by-step explanation:
In the first three articles of the US constitution the power of the US government are mentioned. Article two outlines the duties of the executive branch. President is the part of executive branch. The president is elected for a term of four years. He functions as the commander in chief of the armed forces. He has the power to call the state units of the national guard into service. During an emergency, he is given the power to look after national security. With the senate's approval, he can make treaties. He can issue the pardon for federal offenses and can also convene special sessions.