Which One of the Following Is the Best Example of Reductionism

Multiple Choice

Which one of the following is the best example of reductionism?

A) Sam reduced his sample of church members from 500 to 200 so that it was more manageable.
B) Reba used only one theory in her study of cheating.
C) Steve used only cross-sectional research in his study of teen alcohol consumption.
D) Roberto explained suicide entirely in terms of psychological factors.
E) Greta reduced cooking time for making a stew from 1 hour to 45 minutes