Which of the following is NOT one of the three types of self-defense?

The correct response highlights that "Collective" is not recognized as one of the three types of self-defense within the frameworks typically discussed in the context of military and law enforcement self-defense.

In the context of self-defense, personal self-defense pertains to an individual protecting themselves from imminent harm or unlawful aggression. Unit self-defense refers to actions taken by a military or law enforcement unit to protect itself from threats, emphasizing the importance of teamwork and coordinated efforts in safeguarding group integrity. National self-defense encompasses the broader notion of a nation taking measures to protect its sovereignty and citizens from external aggression or threats that endanger national security.

While "Collective" might suggest a grouping notion similar to "Unit," it does not fit within the established categories typically referenced in self-defense contexts. Understanding these definitions is essential for distinguishing between the various scopes and applications of self-defense.