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In order to reduce explosion risk when it comes to hazardous areas where dangerous substances are present, a security guard must

  1. Be aware of the areas of the site that house hazardous materials

  2. Be familiar with the properties of the hazardous materials

  3. Be aware of safe handling procedures

  4. All of the above

The correct answer is: All of the above

Understanding the potential risks associated with hazardous materials is crucial for a security guard operating in environments where such substances are present. Recognizing the areas of the site that contain hazardous materials enables the guard to be vigilant and take appropriate action if necessary. Familiarity with the properties of these materials is equally important since knowing how they react under certain conditions can significantly inform safety practices and emergency response. Additionally, being aware of safe handling procedures not only protects the individual but also others around them by ensuring that everyone follows established safety protocols to minimize risks. Given these factors, it is essential for a security guard to possess comprehensive knowledge that encompasses awareness of hazardous areas, properties of the materials, and safe handling procedures. This comprehensive understanding significantly contributes to reducing the risk of explosions and other dangerous incidents in hazardous work environments.