Answer:
All three necessitate the presence of communication elements such as sender, message, channel, and receiver and when permissible, feedback. While they use communication tools and practices to transmit a message with its corresponding goals, each of them uses communication to bring positive changes in the society in different ways.
DevCom – two-way (messages transmitted by the sender draw out responses from the receiver which helos the sender measure the effectiveness of the communication process in attaining the goal
ComArts – one-way or two-way (because it covers variety of audience and situations)
MassCom – usually one-way (its main concern is to deliver facts to the mass where feedback is limited or improbable
