Which term describes the amount of delay in delivering video and audio from the source to the destination?

The term that describes the amount of delay in delivering video and audio from the source to the destination is latency. Latency refers to the time it takes for data to travel from the sender to the receiver, which is crucial in audio-visual communications where synchronization is important. If latency is too high, it can result in audio and video being out of sync, disrupting the viewer's experience.

In contrast, bandwidth refers to the maximum rate at which data can be transferred over a network, rather than the delay. Throughput is the actual rate of successful data transfer in a given time, which may be affected by factors such as network congestion but does not specifically address the delay involved in the transmission. Frame rate is a measure of how many frames per second are displayed in a video and does not relate to the timing of data delivery. Thus, latency is the appropriate term for describing the delay in audio and video transmission.