Final answer:
The chief administrative officer of the board referred to in R.S. 37:3503 is the President, who oversees the executive branch including various cabinets and bureaucracies and is supported by a team of department leaders.
Step-by-step explanation:
The chief administrative officer of the board, according to R.S. 37:3503, is the individual who holds or acts in the capacity of the office of President. Within the context of government, the President may be understood as the chief executive of a country, acting under various titles such as president, premier, or prime minister. The duties of such an officer encompass a wide range, including overseeing the executive branch which consists of various cabinets and bureaucracies. Additionally, the President may receive support from their cabinet, which is composed of leaders from different governmental departments.
In overarching terms, the executive branch of a state consists of members such as the governor, lieutenant governor, and other officials - some elected, others appointed. The Office of Management and Budget (OMB) is a key component of the executive branch, preparing the executive budget proposal and ensuring the actions of the executive bureaucracy align with those proposals.