Final answer:
A) Thermal imaging. Thermal imaging allows the ISO to make judgments regarding the location, phase, and spread of a fire in a building.
Step-by-step explanation:
Thermal imaging allows the ISO to make judgments regarding the location, phase, and spread of a fire in a building. Thermal imaging cameras work by detecting the infrared radiation emitted by objects, including fires. They can capture thermal images that show the temperature variations in a scene, helping firefighters to identify the hottest areas and track the movement of fire. The thermal images can also reveal hidden hotspots and potential fire sources.
For example, in Figure 11.7, it shows that most of the heat transfer from a fire to the observers is through infrared radiation. Skin is very sensitive to infrared radiation, so you can sense the presence of a fire without looking at it directly. This is why thermal imaging is a valuable tool for firefighters and fire inspectors, enabling them to assess the situation and make informed decisions to mitigate the fire.