Which hazard type results from exposure to viruses or bacteria?

• A. Chemical
• B. Biological
• C. Thermal
• D. Physical

Answer: (B)

The correct answer is biological because this category specifically refers to hazards that come from living organisms, including viruses and bacteria. Biological hazards can cause diseases and infections in humans and other living organisms; for instance, exposure to contaminated water or surfaces can lead to the transmission of harmful pathogens.

In contrast, chemical hazards pertain to toxic substances that can cause harm through chemical reactions or toxicity. Thermal hazards involve exposure to extreme temperatures, which can cause burns or heat-related illnesses. Physical hazards relate to physical agents that can cause injury, such as machinery, falls, or obstacles. Thus, when dealing with viruses or bacteria, the associated risks clearly fall under the classification of biological hazards.