Which One of the Following Is an Example of a Disturbance

Multiple Choice

Which one of the following is an example of a disturbance that interferes with the transmission of a message?

A) sending unsolicited sales messages to prospects
B) adding your contact information at the end of an e-mail message
C) leaving a message on the answering machine when you cannot reach someone
D) thinking about the party you attended last night while sitting in a lecture