Who is defined as a person who buys or receives goods or services?

A person who buys or receives goods or services is defined as a consumer. This term encompasses anyone who engages in the process of purchasing products or utilizing services, whether for personal use or for household consumption. Consumers play a crucial role in the economy, as their spending drives demand for goods and services, influencing production, pricing, and the overall market.

The other terms provided do not accurately describe this role. "Collater" generally refers to an asset pledged as security for a loan, which is unrelated to the act of purchasing goods or services. "Copay" is a fixed amount paid by a patient for health care services, often part of an insurance plan, and doesn't represent a general buying or receiving of goods or services. A "Certificate Program" is an educational course or set of courses that leads to a certification, which is not relevant to the definition of a consumer. Therefore, identifying the correct term as a consumer emphasizes the fundamental concept of economic participation in terms of buying and using goods and services.