Which principle underlies the effectiveness of systematic desensitization?

You can't enjoy life if you are surrounded by things that induce anxiety is the principle behind the effectiveness of systematic desensitization.

"Systematic desensitization" is a kind of behavioral therapy which is mainly based on the principle of "classical conditioning".This therapy is mainly for those who faces phobia of being anxious.

This aims in removing the fear response of a phobia and will be substituted to relaxation response.In this therapy, the client imagines a situation and keep on picturing it in his/her mind until  it fails to evoke his/her anxiety that will be indicating the success of this therapy.The number of sessions required depends upon the severity of phobia. Other given principle are not the based on this therapy.

answer; the correct answer to the above statement is to increase the production of milk in a herd of milk cows, the highest producing cows were chosen as the mother;

50% because no one is smart enough to relize that money makes the world go round and 99% of the earth hates donald trump the other 1% is the republicans go figure right