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Penny works in the telephone sales department of the Energy Efficient Window Company. She uses a random digit dialing technique to contact potential customers. Once she has a potential customer on the phone, she invites them to complete a brief survey about energy efficient windows. For example, she asks consumers: “Do you agree that replacing your old windows with an energy efficient window system could reduce your monthly heating/cooling bill?” At the end of the survey, Penny says, “It sounds like you could benefit from a new set of energy efficient windows. I can tell you about some exciting discounts that we're currently offering through our company. If not now, when would be a good time to call back?” This is a good example of: