The rule specifies that treatment professionals do have legal duties to third persons if they have cause to reasonably believe that one of their clients is going to harm that person.

Tarasoff

Explanation:

The tarasoff is a California law that provides the psychotherapist as a responsibility to save or as to warn a third party. Only if the therapist believes that the patient's position is in serious danger of inflicting body injuries to another person upon a reasonably identified victim.

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The correct answer is:   [b]:   "physical systems" .