Which key feature of TikTok ads enhances user engagement?

The key feature of TikTok ads that enhances user engagement is the use of short-form video content that encourages creativity and interaction. TikTok's platform is built around engaging, bite-sized videos that capture users' attention quickly. This format encourages users to create their own content, participate in trends, and interact with others, fostering a sense of community and engagement.

Short-form video content is particularly effective because it aligns with users' preferences for quick, entertaining, and shareable media. It allows advertisers to convey messages succinctly while prompting viewers to engage with the content in a fun and creative manner. This characteristic is fundamental to TikTok's appeal, as it allows brands to connect with audiences in an authentic and impactful way.

Other options, although potentially useful in their contexts, do not capture the essence of what drives engagement on TikTok. For instance, long-form video content may lose viewers' attention quicker, while audio-only ads do not leverage the platform's strength in visual storytelling. Celebrity endorsements, while they can enhance credibility, may not generate the same level of active user interaction as the creativity-driven short-form videos that TikTok promotes.