What do flight attendants hear when the AFT FA calls the FWD FA using the ATT button?

When the AFT Flight Attendant (FA) uses the ATT button to call the FWD FA, the correct response involves a green light illuminating and a HI/LO chime sounding. This indication system is designed to communicate effectively and alert the receiving FA that there is a necessity for communication.

The combination of the green light and the specific chime serves as both a visual and auditory signal, ensuring that the FWD FA can quickly recognize the call and its urgency. The HI/LO chime is distinctive and easily identifiable, which helps FAs respond promptly, especially in the busy and sometimes noisy environment of an aircraft during flight.

In this context, the choice correctly reflects the operational procedures followed by cabin crew for intercom communications, as other options do not align with the standard practices in commercial aviation communication protocols.