Which is the most common task done by forensic odontologists?

The most common task done by forensic odontologists is to identify a victim using their dental remains. They are experienced in their job and highly trained dentists who utilize their know-hows to help in the identification of unknown remains and trace bite marks to a particular person. They may be called in by police officers or coroner. In death cases, they attend autopsies and also take pictures, cranial measurements, dental impressions, and x-rays from the remains of the dead person. 

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it should be d or b but i'm sure it's d