The primary purpose of a certificate of confidentiality is to: allow law enforcement to investigate abuse cases. protect researchers from disclosing conflicts of interest. prevent subjects from knowing the purpose of a study. protect identifiable research information from compelled disclosure.

The correct answer is:   [D]:

 →   " Protect identifiable research information from compelled disclosure. "

                 " The primary primary of a 'Certificate of Confidentiality' is to:   'protect identifiable research information from compelled disclosure' . "

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the atm that sounds like it should be the answer