In a Grocery Store's "Valued Customer" Program, Every Shopper Gets

Multiple Choice

In a grocery store's "valued customer" program, every shopper gets a card that he/she presents to the clerk in the checkout aisle. The card is scanned along with the customer's groceries. The store's computer system tracks each shopper's purchases and automatically provides special valued customer discounts. Every month, the customers in the program receive a newsletter containing coupons that are based on the customer's purchase history. For example, someone purchasing a lot of baby formula and disposable diapers might get a coupon for a free box of baby wipes. This valued customer program is based to a large extent on which of the following types of research?

A) Questioning.
B) Experimentation.
C) Observation.
D) Online surveys.
E) Personal interviews.