Questions: A company is having a buy one, get one free sale. It promotes the event by putting it on its Facebook feed and Twitter page. In this example, Facebook and Twitter represent which element of communication? - message - sender - encoding route - channel

The answer is channel.

The message is the content or information that is being communicated. In this case, the message would be the details of the "buy one, get one free" sale, not the platforms used to convey it.

The sender is the originator of the message, which in this scenario would be the company itself, not Facebook or Twitter.

Encoding refers to the process of converting the message into a form that can be sent and understood by the receiver. The encoding route is not represented by Facebook or Twitter in this context.

The channel is the medium through which the message is transmitted from the sender to the receiver. Facebook and Twitter serve as channels in this example, as they are the platforms used to communicate the promotional message to the audience.