____ allows U.S. based Prime members to shop directly from sellers’ online stores with fast, free delivery, a seamless checkout experience, and free returns on eligible orders.

Buy with Prime is the correct answer because it allows U.S.-based Prime members to shop directly from sellers’ online stores with fast, free delivery, a seamless checkout experience, and free returns on eligible orders. This program leverages Amazon's Prime benefits, offering sellers the ability to provide the same premium shopping experience that Amazon customers enjoy on Amazon.com, but on their own websites. By using Buy with Prime, sellers can increase conversions by offering Prime members familiar perks like fast shipping and easy returns, ultimately enhancing the shopping experience and driving sales outside of Amazon's marketplace. This program is specifically designed to help sellers capitalize on the reach and convenience of Prime membership while maintaining their own online presence.