Final answer:
The Doritos customer-created Super Bowl commercials are an example of (A) User-generated content (UGC), which involves consumer participation in content creation, unlike content made by professional advertising agencies or featuring celebrity endorsements.
Step-by-step explanation:
The Doritos customer-created Super Bowl commercials are an example of User-generated content (UGC). This refers to any content—videos, images, reviews, etc.—created by people rather than brands, and these contributions are often solicited through contests or other incentives provided by the company.
Social media marketing is another avenue where UGC can have a significant impact, as content that users share within their networks can amplify the reach of a brand's message. However, the involvement of consumers directly in creating the commercial content, as with the Doritos commercials, is specifically indicative of UGC.
By contrast, Professional advertising agencies are typically composed of paid professionals who create content for clients, and celebrity endorsements involve celebrities promoting a product. These do not describe the community-driven approach that defines UGC.