What colour is a mandatory safety sign, such as one requiring PPE to be worn?

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Multiple choice — select the best answer

AYellow triangle with black symbol
BRed circle with white bar
CGreen rectangle with white symbol
DBlue circle with white symbol

✓ Correct answer: D. Blue circle with white symbol Mandatory signs that require specific actions, such as wearing PPE, are blue circles with white symbols. This is the standard under the Health and Safety (Safety Signs and Signals) Regulations.

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