Mary and her friend are starving during a road trip to visit…

Mary and her friend are starving during a road trip to visit her sister. They pull over and discover a “Hole in the wall” restaurant. It doesn’t look very fancy, but they are starving and will eat anything at this point. Surprisingly, it is the best food either of them have had in a long time and when their waiter hears they are traveling, gives them a list of restaurants he suggests on their way. This is an example of ____________________.