Answer:
B) is the amount that buyers are willing and able to buy at a particular price.
Explanation:
The quantity demanded of a product or service is how many units are consumers willing and able to buy at a specific price. While the product's demand is given by how many units are consumers willing and able to buy at a price interval. The product's demand is represented by the demand curve, while the quantity demanded is represented by a specific point in the demand curve.
