Fires in joint operations are defined as:

• A. The use of all weapon systems to achieve effects on targets.
• B. Measures to preserve the force and mission by reducing risk and increasing survivability.
• C. The planning and execution of logistics and support to maintain operations.
• D. Delegating authority to subordinates to execute tasks.

Answer: (A)

Fires in joint operations means using all weapon systems to achieve effects on targets. This captures the coordinated use of air, land, sea, space, and other capabilities to deliver the desired effects on identified targets, synchronized in time and space to support the operation plan. It focuses on applying weapon effects to influence or defeat targets, rather than on force protection, logistics, or delegating authority, which are separate functions in operations.