Answer:
D. Occur at least annually.
Step-by-step explanation:
IBR is an acronym for the Institutional Review Board, which is an administrative organization that oversees, approves, disapproves, and evaluates all types of scientific research that uses humans for testing. The purpose of IBR is to protect the rights of human beings and to ensure that research does not provide anything that infringes on the well-being of people participating in research. IBR continually reviews laws and research projects involving human beings. IRB continuing review of a greater than minimal risk approved protocol that is currently enrolling subjects must occur at least annually.