With engagement audiences, advertisers can retarget based on redditor interactions with their ads. Which of the following is an example of an engagement audience?

Engagement audiences on Reddit Ads are built from user interactions within the Reddit platform. Therefore, "People who viewed your video ad on Reddit" is a direct example of an engagement audience, as it tracks users who interacted with your content on Reddit. The other options – "People who visited their website," "People who added a product to cart," and "People who purchased in the last 60 days" – are examples of website-based custom audiences (often built using the Reddit Pixel), not engagement audiences. These audiences track user actions off Reddit on an advertiser's website.