On vessels that are required to have fixed carbon dioxide fire extinguishing systems, the controls to operate the system shall be installed in an accessible location __________. (small passenger vessel regulations)

Correct Answer: Option A — outside the space protected

46 CFR 118.400 requires that controls for fixed carbon dioxide fire extinguishing systems be located outside the space being protected. This ensures that the system can be safely activated by the crew during a fire without requiring entry into the hazardous, oxygen-depleted, or smoke-filled compartment.