What type of detonation occurs when a Precision Guided Munition (PGM) senses the closeness of the target?

Proximity detonation is the correct choice because it refers to the mechanism by which a Precision Guided Munition (PGM) activates its explosive payload when it detects that it is near its target. This type of detonation allows the weapon to maximize its effectiveness by detonating at an optimal moment, often just before impact, which can enhance the destructive impact on the target and improve the likelihood of achieving the intended effect.

In the context of PGMs, this method is particularly beneficial as it takes advantage of various sensors that can detect the target’s presence and adjust the detonation to ensure a more effective strike. This contrasts with other types of detonation methods, which include methods that depend on the munition physically striking the target, exploding after a set amount of time, or detonating in a sequence with other munitions, all of which do not rely on immediate proximity sensing.