Which of the following services allows users to buy and sell products online?

Correct option is B

E-commerce refers to electronic commerce, which involves buying and selling products or services online. Platforms like Amazon, eBay, and Flipkart are examples of e-commerce websites.
Important Key Points:
1. E-commerce enables online transactions of goods and services.
2. It includes B2B (Business-to-Business), B2C (Business-to-Consumer), and C2C (Consumer-to-Consumer) models.
3. E-commerce platforms provide features like secure payments, order tracking, and product reviews.
Knowledge Booster:
· Instant Messaging: Used for real-time text communication.
· Video Conferencing: Allows online face-to-face meetings.
· Streaming: Involves delivering multimedia content over the internet.