Explanation:

Here’s the thing—not just one, but all of those options actually capture key features of a market.

Let’s break each down:

- One Area:

Markets are usually tied, at least conceptually, to a certain area—even if it’s not physical, like an online market.

- Presence of both Buyers and Sellers:

Markets only work if there’s someone to sell and someone to buy. No buyers, no sellers = no market.

- Single Price of the Commodity:

In an ideal market (think perfect competition), identical goods have a single price at a given time and place because of supply and demand.

- All the above:

This puts all of the above traits together—and that’s how real markets operate.