Louie Was Barking Like a Dog and Walking on His

Louie was barking like a dog and walking on his hands and knees.A professional thought the cause of Louie's problem was that he had an excess of a particular neurotransmitter,so she prescribed a drug for him.The professional is most likely a ____________,operating under the _____________ model of abnormal behavior.

A) clinical psychologist, psychological
B) psychiatric nurse, supernatural
C) psychiatric social worker, behavioral
D) psychiatrist, biological