What term describes the medium through which a message is sent?

The correct term that describes the medium through which a message is sent is "channel." In the context of communication, a channel refers to the specific pathway or method used to convey a message from the sender to the receiver. This could include various forms of communication such as spoken words, written text, visual aids, or digital platforms. Understanding the concept of the channel is crucial in public speaking because it influences how effectively a message is delivered and received. The choice of channel can affect clarity, engagement, and the overall impact of the message.

Feedback, while an essential part of the communication process, refers to the responses given by the receiver back to the sender, rather than the medium itself. Occasion pertains to the context or situation in which communication occurs, and culture refers to the shared values, norms, and practices of a group, which can influence communication but does not specify the medium used.