True or False: Cards in a YouTube video have a clickable teaser that appears over the video.

The statement is true; cards in a YouTube video do indeed have a clickable teaser that appears over the video. These cards are interactive elements that creators can add to their videos to provide viewers with additional information or links to other content, such as other videos, playlists, websites, or polls. The teaser appears as a small icon or notification in the corner of the video, and viewers can click on it to access the content or information the creator wants to share.

While it may be true that not all videos utilize cards, the correct understanding of the function of cards themselves confirms that they can contain clickable teasers. Therefore, their primary purpose is to enhance viewer engagement by allowing video consumers to explore further content while watching.