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

The term that accurately describes the medium through which a message is sent is "channel." In communication theory, the channel refers to the method or means by which the message travels from the sender to the receiver. This can include various formats such as spoken words, written text, video, or even digital methods like emails and texts. Understanding the concept of a channel is essential for effective communication, as the choice of channel can greatly influence the clarity and reception of the message.

The other terms do not fit this definition. The environment refers to the context or situation in which the communication occurs, and feedback involves the responses from the receiver back to the sender about the message. Interference refers to anything that disrupts or distorts the message as it travels through the channel, affecting its clarity or understanding. Thus, the channel is specifically the pathway through which the communication is conveyed, making it the correct answer.