María dirige una tienda de ropa en Nueva York y muestra su inventario en Amazon.com. María ofrece entregas el mismo día a los clientes utilizando transportistas asociados de Amazon Flex. ¿Qué solución de envío o entrega está utilizando María?

Amazon Today is the correct answer because it is Amazon's same-day delivery service, which aligns with María's offering of same-day deliveries using Amazon Flex. Amazon Business Seller Program is incorrect because it focuses on selling to businesses, not a specific delivery service for consumers. FREE Amazon Day Delivery is incorrect because it allows customers to choose a preferred day for delivery, consolidating items, but it does not specifically refer to same-day delivery.