Around 1920,the Beginning of the _____________ Era of Public Relations,PR

Multiple Choice

Around 1920,the beginning of the _____________ era of public relations,PR companies began talking to people and listening to them when they talked back-in other words,representing their various publics to their clients,just as they represented their clients to those publics.

A) early public relations
B) propaganda-publicity stage
C) early two-way communication
D) modern technological era