What Made Herbert Hoover One of the Best-Known Government Administrators

What made Herbert Hoover one of the best-known government administrators during World War I?

A) Hoover headed the Food Administration and successfully persuaded Americans to voluntarily ration food supplies.
B) Hoover led the Committee on Public Information that organized public opinion through propaganda to support the American war effort.
C) Hoover warned other "war intellectuals" that supporting American participation in World War I would bring about sharp infringements on political and intellectual freedoms.
D) Hoover served on the National War Labor Board and successfully arbitrated a series of potential workers' strikes that would have disrupted production of war industries.