Final answer:
Amazon capitalized on marketplace strategies to expand its reach and eclipse traditional retailers like Sears. This involved a vast selection of products, advanced warehousing, and the use of economies of scale.
Step-by-step explanation:
The question centers on Amazon's successful strategies which helped the company thrive in the online retail space, contrasting with Sears' inability to adapt. Among the given options, Amazon capitalized on marketplace strategies. These strategies involved creating an online platform where sellers and buyers could exchange goods, further expanding Amazon's reach beyond what Sears achieved with its catalog sales. Amazon also revolutionized the industry by offering a vast selection of books and other products, implementing user-friendly online purchasing systems, and achieving prompt delivery utilizing a network of strategically placed warehouses. These warehouses utilize advanced technology and economies of scale to keep costs low. As a result, Amazon has largely adopted the role once filled by large and independent bookstores.