An ad for Maybelline age-minimizing makeup in Ladies' Home Journal magazine featured actress Gigi Hadid and offered readers a $2-off coupon when they tried the new makeup. In the context of the communication model, measuring which of the following would be the best way for the source to measure feedback?
A) the number of subscribers to Ladies' Home Journal
B) the number of people who make up the target market
C) the number of people who redeem the coupon
D) the number of people who have purchased Maybelline products in the past
E) the number of people to whom Gigi Hadid is an appealing spokesperson
Answer: C) the number of people who redeem the coupon