Which of the following is a primary feature of Shopping ads?

The primary feature of Shopping ads is that they showcase product images, prices, and retailer information. This visual format is designed to provide potential customers with an immediate understanding of the products being offered. The inclusion of images allows shoppers to see what the product looks like, while displaying the price gives them an instant sense of affordability. Additionally, showcasing retailer information helps build trust by identifying where the product can be purchased. This combination of visuals and critical information enhances the shopping experience, making it easier for potential buyers to make informed decisions at a glance.

Other options do not capture the essence of Shopping ads as effectively. For instance, ads that only display text descriptions would be far less engaging and informative than those that include visuals and prices. The ability to compare products directly on the ad is not a standard feature of Shopping ads; rather, they focus on displaying individual products. Lastly, while targeting previous visitors can be part of an advertising strategy, Shopping ads are not limited to that audience and can reach a wider range of potential customers.