An optimized primary image on a product detail page has an all-white background, with the product filling at least 80% of the image area, and no text on the image.

The correct answer is True because an optimized primary image on a product detail page should meet specific guidelines to enhance visibility and customer engagement. Amazon’s best practices require that the primary image features an all-white background, which ensures that the product stands out clearly and is visually consistent across listings. The product should fill at least 80% of the image area to ensure it is the focal point and can be easily viewed by customers. Additionally, there should be no text on the image to avoid clutter and to comply with Amazon's policies, which prioritize showcasing the product itself rather than promotional elements. These guidelines are designed to create a clean and professional presentation that enhances the customer’s shopping experience and ensures consistency across the platform.