What term describes zones established for effective command and control over artillery operations?

The correct term for zones established for effective command and control over artillery operations is "fire control zones." This term specifically refers to designated areas designed to improve the management and coordination of fires, ensuring that artillery units can effectively engage targets while maintaining safety and minimizing the risk of friendly fire. Fire control zones facilitate communication and operational efficiency among different units, allowing for precise targeting and coordination of artillery support.

Operational boundaries, while relevant in defining the limits of a unit's area of responsibility, do not specifically pertain to the management of artillery operations. Similarly, coordination lines are used to ensure that units can deconflict their operations and coordinate actions but are not as specific to artillery command and control. Engagement areas, on the other hand, define specific locations where units are authorized to engage targets but do not serve the same overarching command and control function as fire control zones do.