Answer:
affinity pattern
Explanation:
Affinity patterns show associations that occur among objects in the real world. These objects that show affinity patterns or association patterns are not complementary to each other and may not even be related to each other.
In this case, packaged oats and packaged milk have very little in common except that they are packaged or have some types of prior process done to them. But that is where similarities stop. The fact that people that buy packaged oats tend to buy packaged milk, is an affinity pattern.