Final answer:
The correct reference enabling service members to request an expedited transfer after filing unrestricted reports of sexual assault is DODI 6495.02. This directive provides the necessary procedures and support for the victims within the military structure.
Step-by-step explanation:
The reference that allows service members who file unrestricted reports of sexual assault to request an expedited transfer is C) DODI 6495.02. This Department of Defense Instruction provides comprehensive guidance on the sexual assault prevention and response program in the military. It outlines the procedures for a service member to request a transfer after filing an unrestricted report of sexual assault, which is an essential support measure aimed at protecting the victim and ensuring their well-being during the investigative process and legal proceedings.