An advertiser wants to promote several product Pins from its product group in a single ad. Which ad format should it use?

The correct answer is Collections ad. Collections ads are designed to showcase multiple products in a single ad unit. They feature a prominent hero image or video at the top, followed by three smaller, related product images that users can click to explore further. This format is ideal for advertisers who want to promote several product Pins from a product group together, allowing users to discover and shop for multiple items directly within the ad. Idea ads are multi-page Pins that tell a story or provide instructions, not primarily for showcasing multiple products for purchase. Max width video ads focus on a single video experience. Standard ads typically feature a single image or video and are not optimized for displaying multiple products in an interactive shopping format.