What is defined as a place where buyers and sellers meet?

The correct answer is the term "market," which refers to a system or an environment where buyers and sellers come together to engage in the exchange of goods and services. A market can be physical, like a marketplace, or virtual, like online platforms. The core function of a market is to enable transactions and facilitate trade by providing a space where supply and demand can interact.

While the other options have their specific contexts, they do not encompass the broader concept of a market as defined. An exchange typically refers to a specific mechanism for trading but does not inherently imply a physical or broader social space for buying and selling. A storefront is more focused on the physical location of a single business where sales happen, rather than the concept of a collective area where multiple transactions take place. A trade center may refer to a location dedicated to trade activity but doesn't cover the broader definition of the market where various types of goods and services are bought and sold. Therefore, "market" accurately embodies the fundamental concept of buyers and sellers meeting to conduct trade activities.