I believe it would be called an “Elaboration”
B) study of psychological disorders.
A. i just read about this in my history book for school.
Answer:
Affinity
Explanation:
If you want an audience that aligns with your product, you must choose the affinity method. This method picks up preferences of people through online browsing and then segregates people with similar interests and makes sure they are presented with content they might be interested in.
For example google uses this same strategy to find out peoples interests and then showing them what they want to see.