Problem: Jerry is a waiter at a local bistro. His customers always leave him five-star reviews online and consistently give positive feedback to his manager. One online review said: "Jerry knows what I am about to order before I even do! He somehow remembers my name, every single order I ever placed, and never forgets my birthday. Thanks, Jerry for being a star! This superb level of customer service speaks to the ____ nature of services.
- unexaminable
- attributable
- intangible
- perishable
- inseparable