The correct answer is C. Auditory channel
Explanation:
In communication, the channel refers to the medium used to send and/ or receive a message, this includes electronic channels, written channels, auditory channels, etc. In the case of the auditory channel, this refers to channels in which messages are sent using sounds rather than images, including radio broadcast or calls. According to this, the type of channel Erin is using is an auditory channel as she calls the movie theater to send and receive messages about the time the move she wants to see begins and therefore messages are in the form of sound or auditive messages.
