Sebastian plans to repaint his house for Christmas. He goes to a paint store and picks up two inexpensive tins of yellow paint. The salesperson at the store, however, tells Sebastian to buy the more expensive paint available at the store and warns Sebastian that if he does not buy the more expensive paint, he is bound to encounter the problem of dampness, ugly stains, and paint peeling sooner or later. He also tells Sebastian that these problems will cost him his savings. In this scenario, the salesperson is most likely using the $\_\_\_\_\_$ to earn commitment.