Kari’s Clothes online store has a remarketing list of site visitors applied to a campaign. For this campaign, they only want their ads to appear to customers on the remarketing list. Which targeting option should they choose?

The "Target and bid" setting ensures that your ads will only show to users who are part of your selected remarketing list. This is ideal when you want to exclusively reach a specific audience, like past site visitors. The "Bid only" setting would allow your ads to show to a broader audience (based on other campaign targeting like keywords or demographics) but would let you adjust bids specifically for users on your remarketing list. Since Kari's Clothes wants to only show ads to the remarketing list, "Target and bid" is the correct choice to restrict impressions to that audience.