Final answer:
The subject of this question is Biology, as it pertains to the production of milk and the different types of milk that can be produced by the same dairy.
Step-by-step explanation:
The subject of this question is Biology because it pertains to the production of milk and the different types of milk that can be produced by the same dairy.
In this case, the dairy can produce either whole milk or skim milk. Whole milk is milk that contains all of the naturally occurring milk proteins and fat, while skim milk is milk that has had the fat removed. The production of whole milk or skim milk depends on the processing methods used by the dairy.
For example, the dairy may separate the cream from the milk to produce skim milk, or they may not separate the cream to produce whole milk. The choice of whether to produce whole milk or skim milk may depend on market demand and consumer preferences.