Final answer:
A B2C e-commerce transaction occurs when individual consumers purchase goods and services directly from online merchants.
Step-by-step explanation:
A B2C e-commerce transaction refers to a business-to-consumer transaction, where individual consumers purchase goods and services directly from online merchants. This means that customers can buy products or services from online stores without having to visit a physical store. For example, when a consumer buys a book from Amazon and has it shipped directly to their home, it is considered a B2C e-commerce transaction.