Which of the following is not part of brand logo guidelines for sponsored brands?

The correct answer is "Logo cannot be placed on a white background color" because Amazon's brand logo guidelines for Sponsored Brands do not prohibit logos from being on a white background. In fact, a white background is often acceptable, provided it meets other clarity and design standards. The other options are all valid restrictions: logos cannot be a combination of multiple logos, they cannot extend the headline or include additional text, and they cannot be product images, ASINs, or lifestyle images. These rules ensure brand logos are used clearly and consistently, maintaining a professional appearance within the ad format.