What does the supply of a good refer to?

The supply of a good refers specifically to the quantity that producers are willing and able to offer for sale at a given price over a certain period of time. This definition highlights the relationship between price and the amount of a good that is available, emphasizing that supply is not just about availability but also the willingness to sell at specific price points.

In this context, the correct understanding of supply involves recognizing that it incorporates the elements of price and time, where producers respond to market signals by adjusting the quantity they supply. While other options mention stock and production, they do not incorporate the crucial aspect of pricing and the timeframe, which are vital to understanding the concept of supply in economic terms. Thus, the definition encompassing the quantity offered for sale at a specific price and within a designated time frame is key to grasping the dynamics of supply in the marketplace.