DDAs are primarily concerned with which aspect of munitions management?

The correct choice highlights that DDAs, or DOD-approved Disposal Agencies, focus primarily on the disposal of unserviceable munitions. This includes the safe and effective methods of eliminating munitions that are outdated, damaged, or no longer meet operational standards. The responsibility of disposal agencies encompasses the need to mitigate risks related to hazardous materials, as well as ensuring compliance with environmental regulations and safety protocols during the disposal process.

While aspects such as combat preparation, inventory maintenance, and personnel training are significant components of munitions management, they do not fall under the primary concern of DDAs. Their main function is specifically aimed at handling munitions that cannot be used and ensuring that these items are disposed of properly and safely, thereby preventing any potential hazards they may pose.