Which of the following is an example of a certification mark?

A certification mark is a type of trademark that indicates that goods or services meet a certain standard or quality established by the certifying organization, rather than identifying the source of the goods. The Woolmark logo serves as an example of a certification mark because it signifies that the wool products carrying this label meet specific quality standards set by The Woolmark Company.

This logo assures consumers that the product is made from pure wool and has undergone certain quality checks. It is not associated with a single company producing the wool but rather with a standard of quality recognized across several manufacturers.

In contrast, the other logos mentioned represent brand identifiers for specific companies. For example, Nike's swoosh and AOL logo are direct trademarks that signify the brands themselves, while the PGA Tour logo embodies the brand recognition of that particular organization. Thus, the correct identification of the Woolmark logo aligns with the definition of a certification mark and its role in assuring quality standards.