Mark used in the sale and advertising of services to identify the services of one person and distinguish them from the services of others.

• A. Trade mark
• B. Service mark
• C. Birth mark
• D. Thumb mark

Answer: (B)

Marks used in selling and advertising services to identify the provider and distinguish those services from others are called service marks. They function like trademarks, but specifically for services rather than tangible goods, helping customers recognize the source of the service and avoid confusion between competing service providers. For example, a unique branding mark used on invoices, advertising, and online profiles for a consulting firm serves as a service mark that identifies that firm’s services.

The other terms don’t fit this purpose: a trade mark is tied to goods and their branding, while birth mark and thumb mark aren’t recognized terms in intellectual property for identifying service providers.