Which of the following is an example of a collective trademark?

A collective trademark is a sign used by members of a collective group or association to indicate that the goods or services come from that collective and are subject to certain standards set by that group. This allows consumers to identify products or services that are associated with a particular collective, which can be beneficial for quality assurance and brand recognition.

In this instance, the correct choice illustrates a mark representing a group of businesses. This aligns perfectly with the definition of a collective trademark, as it not only signifies the origin of the goods or services but also emphasizes the collective identity and values of the businesses involved. The collective mark signifies that the products or services meet the established standards of the group, thereby fostering trust among consumers.

The other options do not meet the criteria for collective trademarks. Initials of a corporation can be seen as indicating the source of goods or services but do not represent a collective organization. A logo representing a specific flavor would likely function as a regular trademark for distinguishing that specific product rather than indicating membership in a collective. An invented term for a product functions as a trademark as well, but again, it does not embody the collective nature of a trademark that represents a group of businesses.