Answer: The research must pose no more than minimal risk.
Step-by-step explanation:
One of the four criteria for waiving parental permission is that the research must pose no more than minimal risk. Although it may be appropriate to notify parents that the study is taking place, and many researchers do so, it is not required by the regulations when a waiver of parental permission has been approved. While children must provide assent to participate, depending upon the age of the children there are multiple strategies for accommodating children who do not want to participate other than alternate classroom activities. It is not required that an independent consultant approve waivers of parental permission.