Wallace represents a manufacturer of hearing aids. lisa, an audiologist to whom wallace sold one of his company's new max-ear 2001, is so with its performance that she has written a testimonial and listed some other audiologists whom wallace may approach for a purchase. this is an example of the method used in prospecting.

endless chain

Explanation:

According to my research on different marketing or sales methods, I can say that based on the information provided within the question this is an example of the endless chain method. This is a method used in prospecting in which the client of a salesperson gives the names and information of other individuals that may be interested in the product as well to the salesperson. Which is exactly what has happened in this situation after she has impressed with the product.

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