What do behavior therapists see as the cause of abnormal or undesirable behaviors? unconscious conflicts distortions in thinking discrepancy between the real self and ideal self delusional behaviors?

Abnormal behavior is acquired through classical conditioning, operant conditioning and social learning. (The closest anwser amongst the options would be distortions in thinking)

Explanation: Behaviorism states that all behavior is learned from the environment, and that all behavior that has been learnt can also be unlearnt (which is how abnormal behavior is treated).

the answer would be in this answer. someone already asked the question.