Answer:a Certificate of Confidentiality
Step-by-step explanation:
What is a Certificate of Confidentiality?
A certificates of confidentiality is used to protect sensitive information of the subjects involved in a research from leaking into the public or into anyone else who is not part of the research unless otherwise stated by the subject to do so in particular or exceptional situations.
The kindergarten children who are involved in this research will need this kid of a certificates in order for their parents to be sure that the sensitive and personal information collected from these kids is never leaked into the public without their consent.