An advertiser is running a consideration cost per click (CPC) campaign, but the campaign isn't meeting its goal (KPI) and isn't pacing to deliver in full. What should the advertiser do to help the campaign deliver in full?

The selected answer is correct because replacing existing creative with new Pins can improve the ad's click-through rate (CTR), which increases the Pin’s competitiveness in the auction and allows it to win more impressions without needing to raise the bid. Since the campaign is under-delivering, refreshing the creative helps expand targeting by appealing to fresh segments of the audience and signals to Pinterest's algorithm that the content is relevant, whereas lowering the bid or reducing the audience would further restrict delivery and exacerbate the pacing issue.