Communication is said to be complete only when the receiver of the information understands what the sender of the information is saying. Without this, communication has happened. Moving forward, there are modes of communication, lots of method, the basic thing is that the receiver of taxes the information should understand what is being said. Various modes of communication includes, sign language, body language etc.
From the above, today's prompt can be classified as a mode of communication. He shook his head can mean different things to different people, depending on how they interpret it but getting the message makes it effective.
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