Answer:
The correct answer is - option A.
Explanation:
The parental permission is necessary to according the law in behalf the children for their participation in a clinical research or their clinical therapy data or records in a clinical therapy.
The best answer among all of the options is option a that is that parental permission is required due to the chances of the children might experience the pressure of the prior relationship with the therapist.
Thus, the correct answer is - option A.
