Final answer:
A hazard is a potential source of harm that can cause injury, illness, or loss, with the correct answer being 'All of the above'. Understanding various hazards, including thermal and shock hazards related to electricity, is vital for environmental health.
Step-by-step explanation:
A hazard is a potential source of harm or adverse health effect on a person or persons. In the context of environmental health and safety, a hazard could be something that is likely to cause an injury (potential cause of injury), could make someone ill (potential cause of illness), or could cause damage or loss to property, material goods, or the environment (potential cause of loss). Therefore, the correct answer to the question is 4) All of the above. Specific types of hazards, such as thermal hazards and shock hazards, are associated with excessive electric power or electric current passing through a person, respectively. Understanding these hazards and the precautionary principle, which suggests careful progress in light of poorly understood effects, is essential for promoting safety and environmental health.
Environmental health is greatly influenced by both traditional and modern environmental conditions and aims to reduce the exposure to these hazards.