Answer:
All research involving children
Step-by-step explanation:
The provisions of Subpart D must be applied to all research funded by the HHS (which includes NIH). However, not all federal agencies that have adopted the Common Rule have also adopted Subpart D. In addition to HHS, only the U.S. Food and Drug Administration and the Department of Education have adopted it. Institutions may elect to apply the subpart to all research, regardless of the source of funding.