If One Went to Max Wertheimer for Advice About How

If one went to Max Wertheimer for advice about how to become a productive thinker, Wertheimer would most likely encourage the individual to

A) take a course in formal logic
B) stick with the tried and true principles of association and begin always with simple things before working to more complex problems
C) become aware of unconscious conflicts
D) work on the capacity to grasp structural organizations within the larger context and attempt to see the
E) whole problem