Passage: The highest policy-making body of the bank is the Board of Governors, composed of one representative from each member state. The Board of Governors, in turn, elect among themselves the twelve members of the Board of Directors and their deputies. Eight of the twelve members come from regional (Asia-Pacific) members while the others come from non-regional members.The Board of Governors also elect the bank's president, who is the chairperson of the Board of Directors and manages ADB. The president has a term of office lasting five years, and may be reelected. Traditionally, and because Japan is one of the largest shareholders of the bank, the president has always been Japanese.

Question: Who is the most prestigous policy maker?
Board of Governors