In the context of economics, what is meant by supply?

Supply refers to the total quantity of products that producers are willing and able to sell in the market at various price levels over a given period. Understanding supply is fundamental to economic theory, as it directly influences pricing and availability of goods. When supply increases, it means more products are available for consumers, which can lead to lower prices if demand remains constant. Conversely, if supply decreases, prices may rise due to scarcity.

The other options focus on different aspects of the market. The amount consumers want to buy pertains to demand, which is the counterpart to supply in understanding market dynamics. Measures of demand for goods discuss how much consumers desire a product, rather than the quantity available in the market from producers. The constraint on price elasticity relates to how sensitive the quantity supplied is to price changes, which is a concept used to analyze supply, not a direct definition of it. Therefore, identifying supply as the total quantity of products available for sale encapsulates its essential role in economic interactions.