The fire extinguishing agent dispensed by the unit shown in the illustration is produced by __________. Illustration SF-0020

Correct Answer: Option B — educting mechanical foam through "D" and mixing it with water and air in chamber "E"

Mechanical foam generators function by educting foam concentrate through a venturi (D) into a water stream. The mixture then enters a chamber (E) where it is aerated to produce the finished foam. This process relies on the mechanical agitation of water, air, and concentrate to create a stable fire-suppressing blanket.