What is the main hazard associated with smoke?

The main hazard associated with smoke encompasses inhalation, flammability, and visibility issues. Smoke is a complex mixture that can contain various toxic gases and particulates which, when inhaled, can cause serious respiratory problems and potentially lead to unconsciousness or death. This inhalation risk is a primary concern in fire scenarios.

Additionally, smoke can be highly flammable depending on the materials being burned, contributing to fire spread and increased danger. Lastly, smoke significantly reduces visibility, making it difficult for individuals to navigate their environment during a fire, impairing their ability to escape or effectively respond to the situation. The combination of these factors makes smoke a critical hazard in any fire safety scenario, which is precisely why option C encapsulates the main hazards associated with smoke effectively.