What is required for each image or video in a Facebook Carousel?

Each image or video in a Facebook Carousel must include headlines and descriptions. This requirement allows advertisers to provide context and additional information for each individual piece of content, enhancing engagement and encouraging users to interact with the carousel.

By using headlines, advertisers can capture attention and highlight key messages, while descriptions allow for a deeper explanation or call to action that can guide users towards desired behaviors, such as clicking through to a website or making a purchase. Both elements are crucial for tailoring the viewer's experience and making the carousel effective as an advertising tool.

The other options do not pertain to the typical requirements for a Facebook Carousel. Tags and shares relate more to general social media engagement strategies rather than specific content requirements. Starting and ending times apply to video ads but not to the individual components of a carousel. Photo filters can enhance images but are not a requisite for the function or performance of carousel ads.