What should be immediately conveyed to the caller when a 10Y3 alarm is confirmed?

The correct response to the situation involving a confirmed 10Y3 alarm is to convey the message, "Help is on the way, please hold." This response is appropriate as it provides the caller with immediate reassurance that assistance is being dispatched, which is crucial in emergency situations. It acknowledges the urgency of the caller's situation while also indicating that they should remain on the line.

This type of alarm typically indicates an emergency that requires response from law enforcement or other emergency services. Thus, informing the caller that help is en route helps to maintain their composure while they await assistance. It also provides a clear expectation, as staying on hold could be necessary for obtaining further information or instructions, depending on the incident's severity.

Other choices, while conveying a similar sentiment, do not include the important instruction to hold the line. This could potentially result in disconnection or loss of vital communication with emergency services, which is crucial for both the caller's safety and the effective management of the situation.