Which statement best describes the Fire Support Coordination Line's role in preventing fratricide?

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The main idea here is that the Fire Support Coordination Line defines who is responsible for fires on either side of the line and makes sure any fire that would cross it is coordinated in advance. This boundary setup prevents fratricide by ensuring that firing units and maneuver units know who is authorized to engage targets beyond the line and that fires are integrated with adjacent units’ plans. In practice, if a unit wants to hit a target beyond the FSCL, they must coordinate with the neighboring unit and the fire support coordinating authority to confirm the target and arrange deconfliction, so friendly forces aren’t endangered by unexpected fires. The other options describe weather data for ballistic calculations, assigning radio channels, or choosing which units engage targets—functions that are separate from the role of the FSCL in preventing fratricide.