What are the three fundamental capacities in an individual capability set?

• A. Agents, Infrastructure, and Doctrine
• B. People, Technology, and Policy
• C. Weapons, Armor, and Logistics
• D. Information, Mobility, and Signals

Answer: (A)

Understanding how an individual's capability is built from three interrelated parts—agents, infrastructure, and doctrine—demonstrates why this set fits best. Agents are the human element—the operators, planners, and decision-makers whose actions drive outcomes. Infrastructure encompasses the networks, tools, and platforms that enable those actions to occur reliably and at scale. Doctrine provides the shared guidance—the principles, procedures, and training—that shape how tasks are planned, coordinated, and executed, ensuring consistent and effective use of capabilities.

Together, these three pieces form a complete, workable capability: capable people, the means to act, and the rules that govern how to act. The other groupings miss one of these essential pieces or replace doctrine with policy or focus only on tangible items, which doesn’t capture how action is guided and coordinated.