Question: Which statement is true when discussing single image ads in a Discovery campaign?
- Single image ad layouts show one collage image comprised of many product image assets.
- Single image ads, similar to multi-image carousel ad layouts, show a brief five second preview of your products and services.
- With single image ad layouts, Google combines your images, headlines, and descriptions into countless ad variations.
- Single image ad layouts will expand the image that your customer long-presses on.
Explanation
In this format, single image ads are asset-based rather than locked to one fixed creative. Google Ads allows multiple image assets together with headlines and descriptions, then assembles those assets into combinations that fit different placements and screens. That flexibility is the defining function of the layout, because delivery is built around asset mixing instead of a static image treatment. In current Google Ads documentation, this creative behavior is described in the asset specifications for Demand Gen campaigns, which now cover the former Discovery format. Google Help+1
Why the other options are incorrect
A) Google does not define this layout as one merged collage image; the images are separate assets within the ad. Google Help
B) A brief preview is associated with video formats, not with the core function of single image ads. Google Help+1
D) Long-press expansion is not the official format definition Google gives for this layout. Google Help
Source for verification
Google Ads Help: Demand Gen campaign creative: Asset specifications and ad format guidelines. Google Help
Google Ads Help: About Demand Gen campaigns. Google Help
The answer(s) to the question is highlighted in the BOLD text above. You can also find more questions and answers related to the exams on the "Google Ads Display Professional Certification" page.