Question

question 16
catalytic combustion detectors are:
a flammable vapor detectors used by arson investigators.
b a remote - controlled instrument for approaching and analyzing unknown explosive devices.
c recently developed instruments for detecting the presence of an explosive bomb.
d a device that can be repurposed by technologically sophisticated arsonists to start fires.

Explanation:

Catalytic combustion detectors are specifically designed to detect flammable vapors. Arson investigators use them to check for the presence of flammable substances that could have been used to start a fire. Option B describes a different type of device (for explosives, not flammable vapors). Option C is incorrect as catalytic combustion detectors are not mainly for explosive bombs. Option D is wrong as their purpose is detection, not being repurposed to start fires.

Answer:

A. flammable vapor detectors used by arson investigators.