What term describes the uniform price determined by the proportion of the total delivery used in the products of each class?

The term that describes the uniform price determined by the proportion of the total delivery used in the products of each class is known as the "Blend." This concept is vital in the dairy industry because it reflects how different classes of milk (like Class I, II, III, and IV) are priced and how those prices are mixed to create an average price for all milk sold.

In practice, the blending process allows for the integration of varying values from different classes of milk. For example, Class I milk, which is used for fluid consumption, typically earns a higher price compared to milk designated for manufacturing, such as cheese or butter. The blend price ensures that producers are fairly compensated based on the total utilization of their milk shipments in various product classes, taking into account both the higher and lower valued uses of milk.

Other options like rate, average, and quota do not accurately capture this specific pricing structure. A rate could refer to the specific price per unit, an average might imply a simple mean without considering the proportions of each class, and a quota pertains to limits set on production or sales, rather than the pricing mechanism involved in blending milk classes.