Hazards from fire include:

The identification of hazards from fire includes temperature, heat flux, oxygen depletion, and fire gases, making this option a comprehensive representation of the dangers associated with fire.

Temperature and heat flux are critical factors in understanding fire hazards; high temperatures can lead to severe burns and heat-related injuries, while heat flux describes the intensity of heat transfer, which can affect nearby materials and individuals. Oxygen depletion is a significant concern in fire scenarios, as fires consume oxygen, making it harder for individuals to breathe and increasing the risk of asphyxiation. Fire gases, including toxic byproducts produced during combustion, pose serious health threats, as they can lead to poisoning or hinder effective evacuation.

In contrast, other options provide valid information but do not encapsulate the full range or nature of the hazards associated with fire. While convection, conduction, and radiation pertain to heat transfer, they do not encompass the broader implications of fire hazards succinctly. Similarly, carbon monoxide, phosgene, and Freon are mentioned in other contexts but don't collectively illustrate all hazards posed by fire as effectively as the selection that emphasizes temperature, heat flux, oxygen depletion, and fire gases.