What term describes promoted tweets when a business pays for their placement?

The term that best describes promoted tweets when a business pays for their placement is "sponsored." Sponsored tweets are advertisements that businesses pay to have displayed in users’ Twitter feeds, often blended in with organic content. These promoted tweets are marked as "sponsored" to distinguish them from regular user-generated tweets. This labeling provides transparency to users, indicating that the tweet is a form of advertising.

The other terms do not accurately describe this context. For instance, while "hidden" and "blocked" suggest a lack of visibility or obstruction, they do not represent the concept of paid promotional tweets. "Labeled" could imply categorization but lacks the specificity and common usage found with "sponsored." In marketing terminology, "sponsored" is widely understood to indicate that the content is paid for by a company to reach a targeted audience, effectively promoting their brand or product.