The School of Thought Known as Behaviorism Argued That Real

The school of thought known as behaviorism argued that real progress in the field of psychology would occur if psychologists would limit their study to

A) simple animal behaviors before attempting to explain the complexity of human behavior.
B) just those human behaviors that could be verified by asking the subjects to explain how they had learned the behavior and why they performed it.
C) behavior that could be verified by physiological data from the nervous system.
D) directly observable and measurable behaviors that could be independently verified.