What Do We Mean by the Phrase 'The Medium Is

Multiple Choice

What do we mean by the phrase 'the medium is the message'?

A) Effective communication occurs when people are neither too quiet nor too loud.
B) Effective listeners should look for nonverbal cues to decipher the sender's true meaning.
C) Effective communicators use several channels to transmit the intended meaning.
D) The communication channel selected transmits meaning beyond the message content.
E) None of these describes this phrase.