The Practice of Training Reporters to Produce a Standardized,seemingly Neutral

The practice of training reporters to produce a standardized,seemingly neutral news product
Was the result of

A) strikes and boycotts by journalists and newspaper readers during the early 1900s.
B) the newspaper industry's realization that the best way to make a profit was to not alienate potential readers who held liberal or conservative political views.
C) federal government regulations that made blatant instances of media bias illegal.
D) state government regulations that made blatant instances of media bias illegal.