What term describes the quantity of a good or service consumers are willing to buy?

The correct term that describes the quantity of a good or service that consumers are willing to buy is "demand." Demand refers to the desire of consumers to purchase goods and services at various price points, along with their willingness to pay. It reflects the relationship between price and the quantity of a product that consumers are prepared to buy in a given period.

Demand can be influenced by various factors such as consumer preferences, income levels, the prices of related goods, and overall market trends. It is a fundamental concept in economics and is essential for understanding consumer behavior, as well as how businesses set their pricing and inventory strategies.

In contrast, supply refers to the quantity of a good or service that producers are willing to sell at various prices, making it a different aspect of the market dynamics. The cost of sales relates to the expenses incurred in producing goods or services, which is not directly connected to consumer willingness to buy. Market analysis involves studying various factors affecting the market but does not define the specific consumer willingness to purchase.