It is true that there are several treatment approaches to anxiety disorders.
Drugs/Tobacco.
Alcohol.
Sexual Activity.
Poor Diet.
Behavior that may cause injury.
Sedentary Lifestyle.
It would be Alpha, If you need more, read up on the subject, if this is a mult. choice, than there is the answer. Good luck.
I am thinking its D or A but it may be wrong
Medical model is the answer. This is the term made by the psychiatrist R.D Laing in The Politics of the Family and Other Essays in 1971. It does include the history,complaint,diagnosis,treatment,prognosis and physical examination. This has been proven to be successful and has basic assumption on medicine driving the research.