Which of the following represents an etiological hazard?

• A. Coal dust exposure
• B. Electrocution risk
• C. Bacterial infection from a spill
• D. Exposure to radiation from a leak

Answer: (C)

An etiological hazard refers to factors that can cause diseases or infections, typically associated with biological agents such as bacteria, viruses, fungi, or parasites. In this context, the presence of a bacterial infection from a spill directly relates to the potential for these microorganisms to lead to illness. The spill could release pathogenic bacteria that pose a health risk to individuals who come into contact with it, thereby categorizing it as an etiological hazard.

The other options represent different kinds of hazards. For instance, coal dust exposure is primarily a chemical or respiratory hazard due to the particulate matter affecting lung health. Electrocution risk constitutes a physical hazard associated with electrical safety, while exposure to radiation from a leak is a radiological hazard that concerns exposure to ionizing radiation. Each of these scenarios highlights risks in different categories, but none aligns with the definition of an etiological hazard like the bacterial infection linked to a spill does.