Which of the following are examples of product ad enhancements?

The selected answer options, Free shipping, Merchant promotions, and Product condition, are correct because they are all considered product ad enhancements that can help make ads more appealing and informative to potential customers. Free shipping is a common enhancement that highlights shipping offers, making the product more attractive by showing shoppers they won't incur additional shipping costs. Merchant promotions allow advertisers to display special offers or discounts, such as percentage off or limited-time deals, directly within the product ad, increasing the likelihood of clicks and conversions. Product condition, such as specifying whether a product is new, used, or refurbished, adds transparency and clarity to the ad, helping customers make more informed purchasing decisions. The option Product weight extension is not typically used as a product ad enhancement in the same way as the other three options listed.