Why do you think “amazon” became successful

I believe that Amazon became successful as a business model by in some ways mimicking Sears model. At first Amazon only sold books and once they had mastered that successfully they were able to put many independent book stores out of business and then focused their energies on every other non perishable item that people needed. They took on toys clothing, food items etc. Sears did this by providing items out of their catalog. Amazon does this from their online app. people create their accounts and can search from their phones and have things sent directly to their homes. The advancement of Amazon can be directly related to the demise of shopping malls.

Yes i believe the answer is b. it seems to be the most logical answer. hope this . : )