Carl Created Descriptions of Various Advertising Executions in 10 Types

Carl created descriptions of various advertising executions in 10 types of media for his retail store "Home." He then selected a sample of people in the area located around his store and asked each person the degree to which he or she felt influenced by each ad execution on a scale from 1-10. Which type of analysis was Carl doing?

A) experimentation
B) observation
C) media equivalency
D) media timing
E) response modeling