Why are face-to-face efforts more effective at persuading others than are public service campaigns?

Throughout the history of human societies, narrative played all of the following roles except:

A) Transmit cultural history B) Entertain the masses C) Teach how to behave in society D) Teach how to behave in society

A comparison-contrast arrangement shows the audience how two

things are similar and different. Indicate whether the statement is true or false