The correct answer is: C) They advise the President on policy matters.
Independent Executive Agencies are tasked with the administration of federal laws that apply to specific areas. These are self-governed by a presidentially-appointed board and are part of the executive branch. Some of them are run like businesses.
Examples of Independent Executive Agencies are: the CIA, which is a key element of the national defense providing intelligence regarding possible threats; and FEMA, which is in charge of disaster relief programs.