Operational support requirements refer to criteria for how a system supports the mission, including cost, performance, and supportability.

• A. Criteria for how a system supports the mission, including cost, performance, and supportability.
• B. End-user satisfaction metrics only.
• C. Only training requirements.
• D. Scheduling constraints.

Answer: (A)

Operational support requirements describe what is needed to keep a system performing its mission, focusing on measurable criteria like cost, performance, and how well the system can be supported (maintained, repaired, supplied). This is the best match because it directly captures the sustainment view: what it takes to operate and support the system over its life cycle, not just one narrow aspect. End-user satisfaction metrics only look at user feelings, training requirements focus on learning needs, and scheduling constraints address timing—none of these alone fully define how a system is supported during operations.