The most media-rich channel for exchanging information is:?

B)    face-to-face communication.

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Hi Vinod - the answer to the question actually depends on the type of information and the sender. Companies for example utilize social media websites (channels) to communicate with their customers - get their feedback or engage with them on updates that concerns them. Face-to face and email communication can work best when dealing with customers' issues and complaints - providing a personal touch in a formal to a semi-formal manner. As for telephone communication, it works best when answering queries or questions about the products/services of the company. Written memos work internally between employees/management.