Answer :
Final answer:
The heat indicator of a possible flashover is darkening smoke. When smoke darkens, it indicates that the temperature is increasing and there is a higher concentration of gases and particles in the smoke, which can lead to a flashover. Option C
Explanation:
The heat indicator of a possible flashover is darkening smoke. When smoke darkens, it indicates that the temperature is increasing and there is a higher concentration of gases and particles in the smoke, which can lead to a flashover, a rapid spread of fire across a room or building.
In a flashover, the heat and flames from a fire reach a critical level and cause all combustible materials in the area to ignite simultaneously. This can be extremely dangerous and can quickly lead to a fully involved fire.
Therefore, when observing darkening smoke during a fire incident, it is important to take immediate action to extinguish the fire and evacuate the area to prevent a flashover.
Learn more about heat indicator here:
https://brainly.com/question/17669118
#SPJ11
