Question 22 of 30
If there has been a fire in a closed, unventilated compartment, it may be unsafe to enter because of:
A
High accumulations of nitrogen gas
B
Excess relative humidity
C
A lack of oxygen
D
Built-up electrostatic charges
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Answer & Explanation
The correct answer is Option C: A lack of oxygen.
Fires consume oxygen for combustion. In a closed compartment, the oxygen level will significantly decrease, creating an atmosphere with insufficient oxygen to support human life. Therefore, entering such a compartment without self-contained breathing apparatus (SCBA) is extremely hazardous due to potential asphyxiation.