Final answer:
The correct order of priority for the mandatory electronic sources of procurement for medical materiel is DLA, ECAT, and DAPA.
Step-by-step explanation:
The mandatory electronic sources of procurement for medical materiel, in order of priority, are:
- Défense Logistics Agency (DLA)
- Electronic CatLog (ECAT)
- Défense Medical Logistics Standard Support (DMLSS) managed systems, which include the Défense Medical Logistics Enterprise Solution (DMeL), where DAPA (Distribution and Pricing Agreements) are included.
Therefore, the correct order is: DLA, ECAT, DAPA. These are the primary sources that should be used by government entities when procuring medical materials and pharmaceuticals.