Final answer:
The Defense Safety Oversight Council (DSOC) is the group responsible for governing accident reduction efforts in the Department of Defense, with representatives from each military service and DoD agency.
Step-by-step explanation:
The group created to provide governance of accident reduction efforts with representation from each service and DoD agency is the Defense Safety Oversight Council (DSOC). The DSOC is tasked with developing and promoting safety initiatives across the Department of Defense while fostering a culture of safety to minimize the risk of accidents and enhance mission effectiveness. It includes senior leaders from each military branch and various defense agencies, underscoring the DoD's commitment to safety and accident prevention.