At what range should the "in" element instruct the "out" element to continue or reform?

The correct answer is 10 NM because this range represents a strategic balance between the need for effective engagement with the enemy and maintaining a manageable distance for operational safety and tactical advantage. At this distance, the "in" element can effectively assess what is happening, communicate necessary instructions, and ensure that the "out" element can either continue its mission or reposition without being at an increased risk of enemy engagement. This range allows for effective coordination and responsiveness in dynamic combat situations, ensuring that both elements can operate efficiently while remaining within a tactical framework designed to optimize their capabilities.

The other choices represent ranges that could either be too close or too far for effective communication and decision-making. A smaller range, such as 5 NM, may not allow sufficient time for tactical maneuvers, while larger distances like 20 NM or 50 NM could complicate the ability to respond swiftly to changing conditions or to maintain contact, making 10 NM the most practical and effective choice for ongoing operational integrity.