Which of the following accurately defines Electronic Commerce?

The definition of Electronic Commerce embodies the buying and selling of goods online, encompassing a wide range of activities conducted over the internet. This includes not only transactions between businesses and consumers (B2C) but also transactions between businesses (B2B), and even those involving consumers selling to one another (C2C). The essence of electronic commerce lies in the use of online platforms to facilitate these commercial exchanges, which may also entail various services such as order processing and payment processing.

The other choices do not encompass the full scope of electronic commerce. While creating digital product advertisements is a component related to marketing that may support e-commerce activities, it does not define the transaction aspect itself. A mobile payment system refers specifically to a method of payment via mobile devices, which is just one aspect of the broader e-commerce framework. Lastly, managing retail supply chains electronically pertains more to logistics and inventory management rather than the core concept of buying and selling goods online. Collectively, these distinctions clarify why the choice focusing on online transactions is the most accurate definition of electronic commerce.