An audible outrigger/stabilizer alarm indicates

An audible outrigger/stabilizer alarm serves a critical safety function by alerting personnel that the outriggers or stabilizers are in motion. This warning system is essential because it informs operators and nearby workers that the crane’s stabilizing mechanisms are being adjusted, which may pose a risk if individuals are not aware and do not maintain a safe distance.

When the alarm sounds, it ensures those in proximity understand the crane is undergoing changes in its stance or stability, which is crucial for safe operation. This is particularly important in busy work environments where visibility might be limited or where multiple operations are occurring simultaneously.

The other options do not accurately represent the primary function of the audible alarm. The alarm specifically pertains to the movement of the outriggers or stabilizers and does not indicate lifting operations, hydraulic issues, or the boom's position. Understanding this function reinforces the importance of safety protocols and maintaining awareness of equipment operations on site.