Answer:
no more than minimal risk to the child
Step-by-step explanation:
45 CFR Part 46 focuses on the protection of human subjects, as they pertain to demonstration projects, making sure that they are safe. IRB's risk assessment would likely conclude that this study involves no more than minimal risk to the child due to the test only requiring samples that the subjects provide naturally on a daily basis and involves no invasive procedures or drastic changes in the subject's life.