Which of the following fulfillment solutions are available to vendors selling on Amazon.com?

Direct Fulfillment is the correct answer because it is a fulfillment solution specifically designed for vendors selling on Amazon.com. With Direct Fulfillment, vendors ship products directly to customers from their own warehouses, but Amazon handles customer service and returns. This allows vendors to offer a wider selection of products, especially those that are bulky or have special handling requirements, without needing to send them to Amazon's fulfillment centers. Fulfillment by Amazon (FBA) is a service for sellers (third-party merchants), not vendors, where Amazon stores, picks, packs, ships, and provides customer service for their products. Seller Fulfilled Prime (SFP) is also for sellers who want to deliver Prime orders directly from their own warehouse while meeting Amazon's strict performance requirements.