Final answer:
The AETF FMs consist of six scalable modular elements that provide the capabilities required to open, assemble, and operate an air expeditionary wing or group.
Step-by-step explanation:
AETF FMs refers to the Air Expeditionary Task Force Functional Manager software. The six modular elements of the AETF FMs provide the capabilities necessary to assess, assemble, and operate an air expeditionary wing or group. These modular elements can be scaled up or down to meet the specific requirements of different military missions. So, the correct answer to the given question is b) assemble.