Final answer:
Selling a bicycle on eBay to another individual is an example of C2C (Consumer-to-Consumer) e-commerce, which allows private individuals to buy and sell among themselves without a business intermediary.
Step-by-step explanation:
When you sell your bicycle to another individual on eBay, you are engaging in C2C e-commerce. This stands for Consumer-to-Consumer, which is a business model that facilitates commerce between private individuals. This type of e-commerce is common on platforms like eBay, which connects buyers with sellers directly, allowing them to conduct transactions without the involvement of a traditional business.