An advertiser sets up an awareness campaign with the goal of reaching people on Pinterest who are interested in holiday recipes while achieving low cost per mille (CPMs). The campaign is set up with: A lifetime budget of $40,000 for 50 days Three ad groups targeting food, drink and holiday interests Two static images, two carousels and two videos The campaign is pacing to deliver in full but has higher CPMs than the goal. Which action can the advertiser use to improve performance?

Optimizing creative assets for Pinterest best practices, such as using high-quality vertical images and compelling video, can significantly improve engagement and ad relevance. Higher engagement often leads to better ad quality scores, which can reduce CPMs. Pausing the ad group with the highest CPM for interests is a direct way to improve overall campaign efficiency. By removing the underperforming ad group, the budget is reallocated to more efficient ad groups, leading to a lower average CPM. Extending campaign end dates and switching to custom bids might not directly address high CPMs and could even lead to under-delivery if bids are too low. Adding an irrelevant interest like "Beauty" would dilute targeting and likely increase CPMs. Adjusting the campaign budget without addressing the underlying cause of high CPMs won't solve the problem and could hinder delivery.