The purpose of the office of the president is to run the government. sign or veto pending legislation. nominate or appoint officials. advise the president on education.

First Option i.e to help run the government is most appropriate.

The purpose of the office of the president was created by Roosevelt in order to help the president to govern effectively. The office mostly have the closest advisers of  the President. There are various important councils which exist within the Office of the President. Some important councils include :