Which situation would result in a firepower kill?

A firepower kill specifically refers to a situation where a target becomes ineffective to the extent that it can no longer perform its intended function, primarily due to damage from hostile action. This can include disabling important components of a vehicle or weapon system, rendering them inoperable for the purpose they were created.

In the context of the options provided, when a target loses its effectiveness—whether through damage that impacts its operational capability or through inflictions that impair the crew or systems—this directly pertains to the definition of a firepower kill. This is essential in battlefield operations, where the primary aim is to neutralize the adversary's capability to engage effectively in combat.

The other scenarios, while they may relate to the broader context of combat effectiveness and tactical advantages, do not meet the criteria for a firepower kill. For example, vehicle immobilization without weapon use does not necessarily equate to loss of effectiveness in a combat sense; it simply indicates that the vehicle cannot move but might still possess operational capabilities. Better positioning of forces is more tactical and does not directly imply a destructive or impairing action against an enemy. Complete destruction of an enemy unit, while a significant achievement, typically refers more to annihilation rather than mere incapacitation or impairment, which