Answer:
The amount of user generated social media is a type of earned media.
Step-by-step explanation:
Earned media describes the publicity which a brand like Diet Coke Flavors gets through the word of mouth or public discussion about it rather than traditional paid advertising media.
This kind of publicity or recognition can take the form of product/brand reviews by a journalist or social media discussions by consumers who have interests in the brand. Their efforts would publicize the brand without the company paying for it like traditional paid advertising media.