Which of the following tools can an advertiser use to add custom AI-generated brand images to their Sponsored Brands campaign?
Explanation: The correct answer is **Image generation** because this tool allows advertisers to create custom AI-generated brand images that can be seamlessly integrated into their Sponsored Brands campaigns. By utilizing image generation, advertisers can develop visually appealing and unique images that reflect their brand identity and messaging, enhancing the overall effectiveness of their advertising efforts. In contrast, Responsive eCommerce creatives (REC) are designed to optimize display ads for various devices but do not specifically focus on generating custom images, while the Brand Innovation Lab is more geared towards developing and testing creative concepts rather than generating images for campaigns, making image generation the most appropriate option for adding custom visuals to Sponsored Brands.