Answer:
c. feedback
Explanation:
Feedback is a communication process that reaches its final point when the message has been successfully transmitted, received, and understood. The receiver who is Ann, in turn, responds to the sender (Claritin advertisement), indicating comprehension and that is when Ann went to store and purchased the product.
Feedback may be direct, such as a written or verbal response, or it may take the form of an act or deed in response (indirect).
