As a Social Scientist Who Works with Advocacy Groups, It

As a social scientist who works with advocacy groups, it is most likely that Professor Sandburg would be interested in tracking the size of the adolescent population over a period of time for all of the following reasons, except which one?

A) He wants to see how funds are allocated for such things as social services, education, and health care.
B) He wants to understand the behavior of different cohorts.
C) He wants to see how these groups are influenced by the mass media.
D) He wants to see the degree of political or social influence that given cohorts have.