What type of hazards are characterized by physical dangers such as debris and shrapnel?

The correct answer is Mechanical hazards, as these are specifically associated with physical dangers that can cause harm or injury. Mechanical hazards typically include elements like debris and shrapnel, which pose risks primarily due to their physical nature and the potential to cause injury through impact or other means of physical interaction.

Bacterial hazards are related to the dangers posed by biological agents, including bacteria that can cause diseases, while chemical hazards involve exposure to harmful substances that can result in chemical burns or toxicity. Radiological hazards pertain to exposure to radiation, which can lead to long-term health issues such as cancer, but do not inherently include the immediate physical dangers associated with shrapnel or debris. In summary, mechanical hazards directly align with the context of physical injuries from debris and shrapnel, making it the most appropriate choice.