SCENARIO $7-1$

Sam is a sales representative for Alliance Ltd$.$ who is having trouble explaining the benefits of his product He has decided to try to improve his communication by examination of the communication process model. Currently, he calls customers on the phone and tells them what new products are available. He then sends the customers their orders via the postal service. His customers frequently return goods because they are not as expected.

Referring to SCENARIO $7-1,$ Sam's customers complain that they don't understand the products. This problem seems to be in

Select one:

the channel

encoding

feedback

the medium

control