Which of the following theoretical orientations asserts that scientific psychology should focus on the study of observable behavior?

A) Humanism.
B) Behaviorism.
C) Psychoanalysis.
D) Structuralism.

Behaviorism asserts that scientific psychology should focus on the study of observable behavior, rather than on consciousness, thoughts, or feelings. Behaviorists believe that behavior can be explained by conditioning, reinforcement, and punishment, and that it is possible to modify behavior through these processes.