Which of the following indicates that a fire extinguisher is not in service?

A fire extinguisher is deemed to be out of service when it has visible signs of damage that can impair its efficacy, such as a damaged nozzle or hose. The nozzle and hose are crucial components that direct the extinguishing agent toward the fire, and any damage to them can significantly prevent the extinguisher from functioning properly when needed. This makes such a condition a clear indicator that the extinguisher should be taken out of service for repairs or replacement.

In contrast, a full charge indicator signifies that the extinguisher is ready for use, a clear inspection tag shows that it has passed inspection and is in compliance with safety standards, and a bright color typically signifies that the extinguisher is readily visible, which is important for quick identification in an emergency. Each of these characteristics points towards the extinguisher being operational rather than indicating any issues that would take it out of service.