In an organisation, the informal and unofficial network through which rumours and unconfirmed information spread among staff is known as the
Agrapevine.CORRECT
Bnotice board.
Cchain of command.
Dbulletin.
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Why the answer is A, and why the others tempt you.
The grapevine is the standard term for informal communication that bypasses official channels. The chain of command is the formal line of authority, and both the notice board and a bulletin are official channels for authorised information.
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