​Other Than Stumpf's Research,his Greatest Influence on Psychology May Have

Multiple Choice

​Other than Stumpf's research,his greatest influence on psychology may have been ____.

A) ​educating the founders of Gestalt psychology
B) the legitimization of music as a therapy for mentally ill and developmentally disabled persons
C) ​the legitimization of introspection as an experimental technique
D) the legitimization of untrained observers to do introspection in experimental research
E) the discovery of imageless thought and the ensuing debate with Wundt