Concept:E-commerce means online buying and selling of goods and services.
Explanation:Option B is the correct definition of e-commerce.
It includes all commercial transactions carried out through the internet.
Consumers can shop, pay, and order products without visiting a physical store.
There are no barriers of time or distance in e-commerce.
Examples include Amazon, eBay, and Alibaba.
Common types are B2B, B2C, C2C, and C2B models.
It also covers digital services like online banking and e-ticketing.
Growth in internet usage and technology has greatly expanded e-commerce.
Security and privacy are important to protect customer information during online transactions.
Mobile commerce, or m-commerce, is a rising trend using smartphones for online shopping.
Thus, the term 'e-commerce' refers specifically to internet-based buying and selling.
Answer:B. Buying and selling of goods and services over the internet