✓ Correct answer: A. Clear and understandable instructionsHealth and safety signs must convey instructions clearly enough for all workers to understand and act on them safely.
Why the other options are incorrect:
• They are discretionary in most workplaces: Appropriate signage is a legal requirement, not optional.
• They may be disregarded when inconvenient: Ignoring safety signs creates hazards and potential legal liability.
• They are limited to marking emergency exits: Signs are used for a wide range of safety purposes, not just emergency exits.
• They are only necessary in large organisations: Workplaces of all sizes are required to display suitable safety signage.
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Theory