Which type of fire alarms are considered solely decorative?

The correct answer identifies fire alarms that are installed solely for their aesthetic appeal, without any functional role in detecting smoke or fire. These types of alarms may mimic the appearance of traditional fire alarms but do not have the necessary technology to detect hazardous conditions.

Understanding this can be critical for safety compliance. Ensuring that fire alarms installed in a building serve a genuine purpose in alerting occupants to danger is essential for protecting lives and property. An alarm that is merely decorative fails to fulfill its intended life-saving role and could create a false sense of security among occupants.

The other options involve fire alarms with specific functions related to safety codes, compliance tests, or municipal requirements, which emphasize their necessary role in smoke detection and fire safety systems. Thus, option C stands out because it accurately captures the essence of purely decorative fire alarms, which lack functionality beyond aesthetics.