Final answer:
The Navy Sexual Assault Prevention and Response Office (SAPRO) is responsible for overseeing and coordinating all activities related to sexual assault prevention and response within the Navy.
Step-by-step explanation:
The responsibility for overseeing, coordinating, and synchronizing all sexual assault prevention and response actions across the Navy domain falls on the Navy Sexual Assault Prevention and Response Office (SAPRO). This authority is distinct from the unit commander, local police departments, and civilian advocacy groups. The Navy SAPRO has the overarching responsibility to provide a consistent, effective, and victim-sensitive approach to prevent sexual assault and to respond promptly and effectively when prevention fails.