Answer:
Sarah is attempting to effectively encode her message to encourage better understanding.
Step-by-step explanation:
To begin with, encoding is a term in communication which describes the conversion of ideas into gestures or words that convey meaning. In other words, it is the art of channelling information to receivers in ways that they can understand.
As a professor marketing, Sarah is well versed in marketing exchange but wants to ensure that her students understand the concept better as she does. To achieve this, Sarah logically converts the ideas (encode) she has on marketing exchange through lots of relatable examples that foster better or effective understanding of the subject matter.