Final answer:
Voice tonal quality is not a channel of communication but rather an element of verbal communication, important for conveying messages in certain channels such as face-to-face or telephone communication, not text-based channels like email (C).
Step-by-step explanation:
The channel of communication that does not belong in the provided list is voice tonal quality. When defining channels of communication, we refer to the methods or pathways through which information is conveyed from one person to another. Face-to-face, email, and telephone are all examples of channels that can transmit messages between individuals or groups. Voice tonal quality, while a critical element of verbal communication, is not a channel in itself but a component of how messages might be conveyed, particularly in face-to-face and telephone communications.
Tonal quality plays a significant role in how a message is perceived by the recipient and can influence the effectiveness of the communication. A purely text-based channel like email would not convey voice tonal quality, emphasizing the uniqueness of the voice as an aspect of delivery, rather than a standalone channel.
Moreover, societal shifts towards online platforms for text-based communication, like text messaging and email, underscore the distinction between channels of communication and the elements of verbal communication that contribute to their effectiveness.