Final answer:
A service mark is used on the advertising of a service rather than on the packaging or delivery of the service.
Step-by-step explanation:
A service mark differs from a trademark in that the mark is used on the advertising of the service rather than on the packaging or delivery of the service. This statement is true.
While trademarks are used to protect and distinguish the source of goods, service marks are used to protect and distinguish the source of services. For example, when you see the logo and brand name of a telecommunications company on their advertisements, that is a service mark. It helps consumers identify the source of the services being advertised.