In the Context of Behaviorism, Observable Behaviors Are Considered Public

In the context of behaviorism, observable behaviors are considered public behaviors because:  

A) they highlight the relationship between behavior and reinforcement and show that people influence one another's behaviors. 
B) they help patients gain insight into their conflicts through self-observations. 
C) they can be measured easily and different observers would agree about their existence and features. 
D) they exhibit human perceptions, emotions, and thought processes as an organized whole.