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The meaning of ____________ is that "It must not be done".

  • A.Mandatory sign
  • B.Prohibition sign
  • C.Information sign
  • D.Warning sign

Answer: B

The meaning of a prohibition sign is that 'it must not be done'. Prohibition signs are red circles with a slash across a picture, and they forbid an action such as smoking, entry or the use of naked flames.

A mandatory sign tells us what must be done (for example wear a helmet), an information sign gives facts such as an exit or first aid point, and a warning sign tells us of a danger. None of these says that something must not be done, so the second option is correct.

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