Final answer:
The subject of this question is Law, specifically about the legal concept of using deadly physical force to prevent or terminate certain crimes.
Step-by-step explanation:
The subject of this question falls under the category of Law. This question is asking about the legal concept of using deadly physical force to prevent or terminate certain crimes.
In criminal law, there are circumstances where a person may be justified in using deadly physical force. One example is self-defense, where a person reasonably believes that using such force is necessary to protect themselves from harm or danger.
DR BARKS is not relevant to this question. It appears to be an unrelated abbreviation or acronym.