An advertiser pulls a mid-campaign report and sees that Android mobile devices have higher CPMs (cost per mille) than other devices across awareness campaigns. The advertiser wants to remove Android mobile. Where should the advertiser adjust this setting when editing the campaign?

The correct answer is Targeting strategy. Device targeting, including the ability to specify or exclude certain mobile operating systems like Android, is controlled within the targeting settings of a campaign. By adjusting the targeting strategy, the advertiser can refine the audience to exclude Android mobile devices, thereby optimizing campaign spend based on performance data. Optimization and delivery settings typically focus on bid strategies, budget pacing, and conversion windows, not device types. Demographics deals with age, gender, and location, not device specifics. Placement and tracking settings manage where ads appear within the Pinterest platform (e.g., feeds, search results) and how conversions are tracked, not the type of device used to view the ad.