Which of the following is a popular e-commerce platform?

A popular e-commerce platform is one that allows businesses and consumers to engage in transactions online, facilitating the buying and selling of goods and services. eBay fits this definition perfectly, as it is designed specifically for facilitating online auctions and sales between individuals and businesses. With numerous sellers and a vast array of products available, eBay provides a marketplace where transactions can be conducted seamlessly, which is characteristic of successful e-commerce platforms.

In contrast, platforms like LinkedIn, TikTok, and Vimeo serve different purposes. LinkedIn is primarily a professional networking site, TikTok focuses on short-form video content, and Vimeo is a video hosting service centered around creative and artistic video sharing. While these platforms may incorporate some e-commerce features or promotional capabilities, they are not primarily designed for facilitating direct sales and transactions like eBay is. Therefore, eBay is the clear choice when considering which option is a dedicated e-commerce platform.